Biology Sitemap - Page 2 2016-09-26

Land Biomes
Biomes are the world's major habitats. Land biomes include, tropical rain forests, savannas, deserts, chaparrals, taigas, and tundras.

Molecular Biology
Information and resources pertaining to molecular biology. Learn about macromolecules, lipids, proteins and other molecular components of the cell.

Reptiles
Information and resources pertaining to reptiles.

Human Anatomy & Biology
Information and resources on human biology topics including anatomy, physiology, organ systems and more.

Vein Function - Definition and Diagram
A vein is an elastic blood vessel that transports blood from various regions of the body to the heart. Veins can be categorized into four main types.

Eat Chocolate, It's Good For You
There is no need to feel guilty about eating chocolate on Valentine's Day or any other day. Several studies suggest that chocolate is good for you.

Parietal Lobes Function and Brain Anatomy
The parietal lobes are one of the four main divisions of each brain hemisphere. These lobes play a vital role in touch sensory information processing.

Regeneration of Brain Cells (Neurons)
For almost one hundred years scientists believed that brain cells don't regenerate, until now.

Cranial Nerves
The 12 cranial nerves arise from the brain and control a number of functions in the body. Most cranial nerves contain both motor and sensory neurons.

Natural Killer Cells
Natural killer (NK) cells are immune cells that are expert killers of cancerous or virus-infected cells. They patrol the body on a seek and destroy mission and mobilize other immune cells to provide protection against any future attacks.

Macrophages
Macrophages play an important role in the immune system by protecting the body from infectious agents. These white blood cells engulf and digest pathogens and cellular refuse, clearing the body of harmful substances.

How Cell Phone Use Changes Your Body
Concerns over the safety of cell phones are warranted since these devices emit radiation. Studies have shown that frequent cell phone use alters the brain and cells of the body.

Animal Cams
Animal Webcams give you a unique view into the lives of animals.

How Science Has Built a Better Thanksgiving Turkey
For several decades researchers have been using science to build a better Thanksgiving turkey. These techniques involve selective breeding and nutrition management.

Biology Homework Help
Need help with your biology homework? Find resources and information to help you answer some of your biology homework questions.

10 Great Biology Activities and Lessons
Biology activities and lessons allow students to investigate and learn about biology through hands on experience.

Modeling DNA - Structure, Function and Replication
Constructing a DNA model is a great way to learn about DNA structure, function, and replication. DNA models can be constructed from almost anything including candy, paper, and even jewelry.

Turkey Facts, Biology, & Statistics
About 45 million turkeys are consumed during the holiday season, which translates to about 675 million pounds of turkey. Before sitting down to enjoy that turkey meal, I believe it is appropriate to pay tribute to this splendid bird by discovering some interesting turkey facts.

Lysosomes: Cell Organelles
Lysosomes are membrane-bound sacs of digestive enzymes that aid in the digestion and recycling of cellular material.

Journey Into the Cell - Peroxisomes
Explore the structure and function of eukaryotic peroxisomes.

Cell Biology
Cell biology is the subdiscipline of biology that studies all aspects of the cell. Learn about the anatomy, physiology and biology of cells.

Ten Facts About Cells
The following 10 facts about cells will provide you with well known and perhaps little known tidbits of information about cells.

10 Steps of Glycolysis
In glycolysis, glucose is split into two molecules of a three-carbon sugar.

The Pyramid Of Life
The pyramid of life refers to the hierarchical structure for the organization of life. The most inclusive level is the biosphere, which includes the entire globe.

Aquatic Communities
Aquatic communities can be subdivided based on common characteristics. Two common designations are freshwater and marine communities.

Endangered Species Criteria and Definition
Endangered species are animals and plants that are on the verge of vanishing from the earth.

Defense Mechanisms Animals Use to Survive
Defense mechanisms are very important to all animal life. They can give prey an advantage against hungry predators.

Taxonomy - Classifying and Identifying Organisms
Taxonomy is a hierarchical system for classifying and identifying organisms.

Heart Anatomy Quiz
Take the Heart Anatomy Quiz and find out how much you know about the heart.

Human Anatomy Quiz
What is the largest gland in the body? Take the Human Anatomy Quiz and find out how much you know about human anatomy and the human body.

Virtual Frog Dissection Quiz
Think you know all there is to know about frog dissections? Take this virtual frog dissection quiz.

Test Your Knowledge of Mendelian Genetics- Quiz
Think you know all there is to know about mendelian genetics? Take this genetics quiz.

Cardiovascular System Quiz - Test Your Knowledge
The cardiovascular system is comprised of the heart and the circulatory system. Take this quiz to find out what you know about this organ system.

Temperate Grasslands (Climate, Vegetation, Animals)
Temperate grasslands are savanna-like areas located in cold climate regions. Learn about the animals and plants in this biome.

Land Biomes- The World's Major Habitats
Biomes are identified by the vegetation and animals that populate them. The location of each biome is determined by the regional climate.

Meiosis Quiz - Test Your Knowledge of Meiosis
Test your knowledge of meiosis. Take the Meiosis Quiz.

Mitosis Phases - Biology Study Guide
This study guide introduces you to the basics of mitosis and the mitotic process.

10 Facts About Chromosomes
Did you know that human chromosomes contain viral DNA or that not all organisms have sex chromosomes? Discover 10 interesting facts about chromosomes.

Frog Anatomy - Internal and External
Find information on frog dissection and internal and external frog anatomy.

Digestive System: Nutrient Absorption
Information and resources pertaining to the human digestive system and nurtrient absorption.

Digestive System: Digestion Control
Information and resources pertaining to the human digestive system, nurtrient absorption, and digestion control. Page 2.

5 Health Benefits of Chocolate
Chocolate, specifically dark chocolate, is delicious and good for you too. Chocolate has been found to protect against heart disease, stroke, and obesity.

Christmas Tree DNA
Scientists have discovered that conifers, popular choices for Christmas trees, contain about seven times more DNA than humans.

Biology Prefixes and Suffixes Index
This resource is designed to give you the tools needed to understand the most common prefixes and suffixes used in biology.

Understanding Difficult Biology Words - Education
Understanding difficult biology words is not impossible. Become familiar with how to study difficult biology terms.

Cell Biology Glossary
Do you know what the cytoskeleton does? This cell biology glossary is a good resource for finding succinct, practical, and meaningful biology definitions for various cell biology terms.

Genetics Glossary of Commonly Used Terms
This genetics glossary is a good resource for finding succinct, practical, and meaningful biology definitions for various genetics terms.

Mitosis Glossary
This mitosis glossary is a good resource for finding succinct, practical, and meaningful biology definitions for common mitosis terms.

Angiosperms
Angiosperms, or flowering plants, are the most numerous of all the divisions in the Plant Kingdom.

Anaphase - A Cell Biology Definition
In anaphase, chromosomes move toward opposite poles of a cell. This process happens in preparation for cell division during mitosis and meiosis.

Biological History of Reptiles
Reptiles are very diverse and have developed several adaptations for life out of water. Reptiles include lizards, snakes, crocodilians, tuatara, and turtles.

Centrioles Definition - Biology
Centrioles are cylindrical structures that are composed of groupings of microtubules. Centrioles are found in animal cells and play a role in cell division.

Cytoplasm - Definition and Examples
The cytoplasm is a clear substance that consists of all of the contents outside of the nucleus of a membrane bound cell.

The Laws of Thermodynamics - Definition
The laws of thermodynamics are important unifying principles of biology. These principles govern the chemical processes (metabolism) in all biological organisms.

Kinetochore
The kinetochore connects chromosomes to spindle fibers. This protein complex is essential to the movement of chromosomes during mitosis and meiosis.

Pulmonary Veins Definition - Parts of the Heart
Information and resources pertaining to the pulmonary veins of the heart.

Daughter Chromosome
A daughter chromosome is a chromosome that results from the separation of sister chromatids during cell division.

Microtubules Definition and Examples
Microtubules are hollow rods, functioning primarily to help support and shape the cell. They form the routes along which organelles move within a cell.

Sister Chromatids - Definition and Example
Sister chromatids are two identical copies of a single replicated chromosome that are connected by a centromere and held together by special proteins.

Biology Prefixes and Suffixes: angio-
Biology prefixes and suffixes help us to understand biology terms. The prefix (angio-) refers to a vessel, container or receptacle.

Biology Prefixes and Suffixes: arthr- or arthro-
Biology prefixes and suffixes help us to understand biology terms. The prefix (arthr- or arthro-) refers to a joint or other such type of junction.

Biology Prefixes and Suffixes: auto-
Biology prefixes and suffixes help us to understand science terms. The prefix (auto-) means self, same, or refers to an involuntarily process.

Biology Prefixes and Suffixes: blast-, -blast
Biology prefixes and suffixes help us to better understand difficult biology terms. The affix (blast) refers to an immature precursor cell.

Biology Prefixes and Suffixes: chrom- or chromo-
Biology prefixes and suffixes help us to understand biology terms. The prefix (chrom- or chromo-) means color. A chromoplast is a pigmented plant cell.

Biology Prefixes and Suffixes: derm or dermis
Biology prefixes and suffixes help us to understand biology terms. The term derm or dermis refers to the skin, hide or a covering.

Biology Prefixes and Suffixes: diplo-
Biology prefixes and suffixes help us to understand biology terms. The prefix (diplo-) means double. Diplobacteria are bacteria that exist in pairs.

Biology Prefixes and Suffixes: ect- or ecto-
Biology prefixes and suffixes help us to understand biology terms. The prefix (ect- or ecto-) means outside of or external.

Biology Prefixes and Suffixes: -ectomy, -stomy
Biology prefixes and suffixes help us to decipher biology terms. The suffixes (-ectomy) and (-stomy) mean to remove or amputate.

Biology Prefixes and Suffixes: -emia or -aemia
Biology prefixes and suffixes help us to get a better understanding of biology terms. The suffix (-emia or -aemia) refers to the condition of the blood.

Biology Prefixes and Suffixes: end- or endo-
Biology prefixes and suffixes help us to understand biology terms. The prefix (end- or endo-) means inside, internal or within.

Biology Prefixes and Suffixes: epi-
Biology prefixes and suffixes help us to understand biology terms. The prefix (epi-) means upon, above, in addition to, near, outermost, or prevalent.

Biology Prefixes and Suffixes: erythr- or erythro-
Biology prefixes and suffixes help us to understand biology terms. The prefix (erythro-) means red. A red blood cell, for example, is an erythrocyte.

Biology Prefixes and Suffixes: ex- or exo-
Biology prefixes and suffixes help us to understand biology terms. The prefix (ex- or exo-) means outer, away from, or out of something.

Biology Prefixes and Suffixes: gam-, gamo-, -gamy
Biology prefixes and suffixes help us to understand biology terms. The affix (gam-, gamo-, or -gamy) refers to a sexual union, joining or marriage.

Biology Prefixes and Suffixes: -genic
Biology prefixes and suffixes help us to understand biology terms. The suffix (-genic) means to produce or generate.

Biology Prefixes and Suffixes: haplo-
Biology prefixes and suffixes help us to understand biology terms. The prefix (haplo-) means single or simple. Haplopia, for example, means single vision.

Biology Prefixes and Suffixes: hem- or hemo- or hemato-
Biology prefixes and suffixes help us to understand biology terms. The prefix (hem- or hemo- or hemato-) refers to blood. A hematocyte is a blood cell.

Biology Prefixes and Suffixes: heter- or hetero-
Biology prefixes and suffixes help us to understand biology terms. The prefix (heter- or hetero-) different or dissimilar.

Biology Prefixes and Suffixes: -itis
Biology prefixes and suffixes help us to decipher biology terms. The suffix (-itis) means inflammation or swelling that often results from an infection.

Biology Prefixes and Suffixes: karyo- or caryo-
Biology prefixes and suffixes help us to understand biology terms. The prefix (karyo- or caryo-) refers to the nucleus of a cell.

Biology Prefixes and Suffixes: -kinesis
The suffix (-kinesis) refers to movement, mobility, or motion. The related term kinesia refers to motion sickness and motion-related disorders.

Biology Prefixes and Suffixes: -lysis
Biology prefixes and suffixes help us to understand biology terms. The suffix (-lysis) means decomposition, separation, break down or destruction.

Biology Prefixes and Suffixes: my- or myo-
Biology prefixes and suffixes help us to understand science terms. The prefix (myo- or my-) refers to muscle. A myocyte, for example, is a muscle cell.

Biology Prefixes and Suffixes: meso-
Biology prefixes and suffixes help us to understand biology terms. The prefix (meso-) means middle, between or intermediate.

Biology Prefixes and Suffixes: neur- or neuro-
Biology prefixes and suffixes help us to understand biology terms. The prefix (neur- or neuro-) refers to nerves and other nervous system components.

Biology Prefixes and Suffixes: -osis, -otic
The suffix (-osis) refers to a process, condition, or disease. Words that end with this suffix include apoptosis, osmosis, and atherosclerosis.

Biology Prefixes and Suffixes: -otomy, -tomy
Biology prefixes and suffixes help us understand biology terms. The suffix (-otomy or -tomy) refers to the making of a cut or incision.

Biology Prefixes and Suffixes: -oma
Biology prefixes and suffixes help us understand biology terms. The suffix (-oma) refers to abnormal growth, a mass, tumor or cancer.

Biology Prefixes and Suffixes: poly-
Biology prefixes and suffixes help us to understand biology terminology. The prefix (poly-) means many, multiple or an excessive amount.

How to Study for Biology Exams
Here are some excellent tips to help you learn how to study for biology exams.

Biology Prefixes and Suffixes: -phagia, -phage
The suffix (-phagia) refers to eating or swallowing. Aphagia is the inability to swallow or eat. Related suffixes include (-phage) and (-phagy).

Biology Prefixes and Suffixes: -phyll or -phyl
Biology prefixes and suffixes help us to understand biology terms. The suffix (-phyll) refers to leaves or leaf structures.

Biology Prefixes and Suffixes: -poiesis
Biology prefixes and suffixes help us to understand biology terms. The suffix (-poiesis) refers to the production or formation of a substance or entity.

Biology Prefixes and Suffixes: -phile, -philic
Biology prefixes and suffixes help us to understand biology terms. The suffix (-phile) or (-philic) means to have an attraction to or love for something.

Biology Prefixes and Suffixes: peri-
Biology prefixes and suffixes help us understand biology terms. The prefix (peri-) means around, near, surrounding or enclosing.

Biology Prefixes and Suffixes: phago- or phag-
Biology prefixes and suffixes help us understand biology terms. The prefix (phago- or phag-) means to eat, devour, or destroy.

Biology Prefixes and Suffixes: -scope
Biology prefixes and suffixes help us to understand science terms. The suffix (-scope) refers to a device used for examining or viewing something.

Biology Prefixes and Suffixes: -stasis
Biology prefixes and suffixes help us to understand biology terms. The suffix (-stasis) refers to having a state of stability or equilibrium.

Biology Prefixes and Suffixes: -troph or -trophy
Biology prefixes and suffixes help us to understand science terms. The affix (troph) refers to nourishment. Myotrophy refers to muscle nourishment.

Biology Prefixes and Suffixes: tel- or telo-
Biology prefixes and suffixes help us to understand science terms. The prefixes (tel- and telo-) refer to an end, terminus, or final phase of a process.

Biology Prefixes and Suffixes: zoo- or zo-
Biology prefixes and suffixes help us to understand biology terms. The prefix (zoo- or zo-) means animal and refers to animals or animal-like organisms.

Subclavian Arteries
Subclavian arteries supply oxygen rich blood to upper portions of the body, including the arms, chest, and brain.

Nervous Tissue Glial Cells Structure and Function
Neuroglia are nervous tissue cells that do not conduct nerve impulses like neurons, but provide a support function for nervous system components.

Anatomy of the Heart: Aorta
Information and resources pertaining to the aorta of the heart.

Anatomy of the Heart: Valves
Heart valves ensure that blood flows only in one direction. These thin flaps of tissue are also responsible for the sounds made as the heart beats.

Anatomical Directional Terms and Body Planes
Anatomical directional terms and body planes describe the locations of structures in relation to other structures or locations in the body.

Corpus Callosum
The corpus callosum is a thick band of nerve fibers that divides the cerebrum into left and right hemispheres.

Anatomy of the Brain - Cerebellum Function
The cerebellum is the area of the hindbrain that controls motor movement coordination, balance, equilibrium and muscle tone.

Phenotype Definition
Phenotype is defined as an organism's expressed physical traits. It is determined by an individual's genotype and expressed genes, random genetic variation, and environmental influences.

Incomplete Dominance - Defined
Definition of the term incomplete dominance. Learn how incomplete dominance differs from co-dominance and how they are studied in snapdragon plants.

Monohybrid Cross - A Genetics Definition
Definition of the term monohybrid cross.

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Extremophiles - Extreme Organisms
Extremophiles are extreme organisms that live in conditions that are not optimal for supporting life. They thrive in habitats like hydrothermal vents.

10 Amazing Bioluminescent Organisms
Some organisms such as jellyfish have the ability to glow. The light emitted is due to a chemical reaction. Discover 10 amazing bioluminescent organisms.

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The Five Senses and How They Work
Our senses help us understand the world around us. These senses are touch, taste, smell, sight and sound. Learn about the five senses and how they work.

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5 Surprising Facts About Cheetahs
Did you know that not all cheetahs have spots? Due to a gene mutation, some have blotches and stripes. Discover 5 surprising facts about cheetahs!

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Polygenic Inheritance
Polygenic inheritance is the inheritance of traits such as skin color, eye color and hair color, that are determined by more than one gene.

5 Surprising Facts About Cheetahs
Did you know that not all cheetahs have spots? Due to a gene mutation, some have blotches and stripes. Discover 5 surprising facts about cheetahs!

5 Surprising Facts About Cheetahs
Did you know that not all cheetahs have spots? Due to a gene mutation, some have blotches and stripes. Discover 5 surprising facts about cheetahs!

5 Surprising Facts About Cheetahs
Did you know that not all cheetahs have spots? Due to a gene mutation, some have blotches and stripes. Discover 5 surprising facts about cheetahs!

5 Surprising Facts About Cheetahs
Did you know that not all cheetahs have spots? Due to a gene mutation, some have blotches and stripes. Discover 5 surprising facts about cheetahs!

10 Fascinating Facts About Your Heart
The heart is a powerful muscle that beats 100,000 times per year. It can even beat outside of the body. Discover 10 fascinating facts about your heart.

How and Why Cells Move
Cells generally remain stationary but some migrate to other areas when needed. Responding to signals, these cells move in a fashion that is akin to crawling.

Why Some Animals Play Dead
When faced with danger, some animals go into a catatonic state. They appear to be dead to the world. Discover why some animals play dead.

Why Do We Have Fingerprints?
Did you know that some people are born without fingerprints? Studies indicate that fingerprints don't improve grip, so why do we have fingerprints?

Plant Life Cycle - Alternation of Generations
Did you know that plants alternate between sexual and asexual phases in their life cycle? This type of reproduction is known as alternation of generations.

7 Scary Diseases Caused by Bacteria
Pathogenic bacteria produce poisonous substances that can cause serious diseases. Discover 7 scary diseases that are caused by bacteria.

7 Scary Diseases Caused by Bacteria
Pathogenic bacteria produce poisonous substances that can cause serious diseases. Discover 7 scary diseases that are caused by bacteria.

7 Scary Diseases Caused by Bacteria
Pathogenic bacteria produce poisonous substances that can cause serious diseases. Discover 7 scary diseases that are caused by bacteria.

7 Scary Diseases Caused by Bacteria
Pathogenic bacteria produce poisonous substances that can cause serious diseases. Discover 7 scary diseases that are caused by bacteria.

5 Tricks Plants Use to Lure Pollinators
Flowering plants employ many tactics to lure plant pollinators, such as bees and wasps. Some of these tactics include mimicry and sexual trickery.

7 Scary Diseases Caused by Bacteria
Pathogenic bacteria produce poisonous substances that can cause serious diseases. Discover 7 scary diseases that are caused by bacteria.

7 Scary Diseases Caused by Bacteria
Pathogenic bacteria produce poisonous substances that can cause serious diseases. Discover 7 scary diseases that are caused by bacteria.

5 Tricks Plants Use to Lure Pollinators
Flowering plants employ many tactics to lure plant pollinators, such as bees and wasps. Some of these tactics include mimicry and sexual trickery.

10 Facts About Land Biomes
Did you know that it actually snows in some deserts or that rain forest plants are used to fight cancer? Discover 10 interesting facts about land biomes.

5 Tricks Plants Use to Lure Pollinators
Flowering plants employ many tactics to lure plant pollinators, such as bees and wasps. Some of these tactics include mimicry and sexual trickery.

7 Scary Diseases Caused by Bacteria
Pathogenic bacteria produce poisonous substances that can cause serious diseases. Discover 7 scary diseases that are caused by bacteria.

5 Tricks Plants Use to Lure Pollinators
Flowering plants employ many tactics to lure plant pollinators, such as bees and wasps. Some of these tactics include mimicry and sexual trickery.

5 Tricks Plants Use to Lure Pollinators
Flowering plants employ many tactics to lure plant pollinators, such as bees and wasps. Some of these tactics include mimicry and sexual trickery.

Is the 5-Second Rule True or a Myth?
Most people have applied the 5-second rule when eating foods they have dropped on the floor. Is there any truth to this rule or is it a myth?

How Sweets Alter Your Brain
Sweets not only give us a feeling of euphoria, but they also cause changes in the brain. Excess sugar intake alters brain receptors that control food intake.

Storing Data in Bacteria
Did you know that bacteria can be used to store data? Text, images, music, and even video have been stored in the DNA of these microscopic organisms.

Can Exercise Make You Smarter?
Exercise can help keep you fit, but did you know that it can also make you smarter? Exercise boosts memory, halts brain shrinkage, and promotes brain growth.

10 Facts About Cancer Cells
Did you know that one-third of all cancer cases are preventable or that some cancer cells are caused by viruses? Discover more facts about these abnormal cells that refuse to die.

12 Facts About Blood
Did you know that not all blood is red or that white blood cells are necessary for pregnancy? Discover 12 surprising facts about blood.

Stem Cell Discoveries
Stem cell research has led to several promising discoveries that could give rise to new therapies for the treatment of a number of diseases including multiple sclerosis and Parkinson's disease.

12 Surprising Facts About Ants
Did you know that ants have two stomachs and no ears, or that some ants can be turned into zombies? Discover some interesting facts about ants that may surprise you.

Why Women Live Longer Than Men
Women have a longer life expectancy than men. A major reason for this is due to differences in genetic make-up between men and women.

Why Women Live Longer Than Men
Women have a longer life expectancy than men. A major reason for this is due to differences in genetic make-up between men and women.

Why Women Live Longer Than Men
Women have a longer life expectancy than men. A major reason for this is due to differences in genetic make-up between men and women.

Why Women Live Longer Than Men
Women have a longer life expectancy than men. A major reason for this is due to differences in genetic make-up between men and women.

Why Women Live Longer Than Men
Women have a longer life expectancy than men. A major reason for this is due to differences in genetic make-up between men and women.

Why Women Live Longer Than Men
Women have a longer life expectancy than men. A major reason for this is due to differences in genetic make-up between men and women.

Why Women Live Longer Than Men
Women have a longer life expectancy than men. A major reason for this is due to differences in genetic make-up between men and women.

Why Women Live Longer Than Men
Women have a longer life expectancy than men. A major reason for this is due to differences in genetic make-up between men and women.

Ruler on a Bottle
Have you ever wondered why certain sounds make your skin crawl? Interactions between areas of the brain that process sound and emotions heighten our perception of unpleasant sounds.

Chalk on a Blackboard
Have you ever wondered why certain sounds make your skin crawl? Interactions between areas of the brain that process sound and emotions heighten our perception of unpleasant sounds.

Fork on a Glass
Have you ever wondered why certain sounds make your skin crawl? Interactions between areas of the brain that process sound and emotions heighten our perception of unpleasant sounds.

Knife on a Bottle
Have you ever wondered why certain sounds make your skin crawl? Interactions between areas of the brain that process sound and emotions heighten our perception of unpleasant sounds.

Nails on a Blackboard
Have you ever wondered why certain sounds make your skin crawl? Interactions between areas of the brain that process sound and emotions heighten our perception of unpleasant sounds.

10 Sounds We Hate Most
Have you ever wondered why certain sounds make your skin crawl? Interactions between areas of the brain that process sound and emotions heighten our perception of unpleasant sounds.

How Salmonella Evade Our Natural Defenses
Salmonella cause a type of food poisoning called salmonellosis. These bacteria survive and reproduce by avoiding the body's immune system defenses.

Incomplete Dominance
In incomplete dominance relationships, one allele for a specific trait is not completely dominant over the other allele.

Co-dominance
In co-dominance relationships, neither allele is dominant, but both alleles for a specific trait are completely expressed.

Differences Between Incomplete Dominance and Co-dominance
While incomplete dominance and co-dominance are both patterns of inheritance, there are several differences between the two.

Genetic Dominance
Have you ever wondered why you have the same eye color as your parent? Traits are inherited by the transmission of genes from parents to their young.

Complete Dominance
In complete dominance relationships, one allele is dominant and the other is recessive. The phenotype is determined by the dominant allele.

5 Surprising Facts About Spiders
Did you know that spiders use electricity to build webs and are sometimes cannibalistic? Discover five interesting facts about spiders that may surprise you.

5 Surprising Facts About Spiders
Did you know that spiders use electricity to build webs and are sometimes cannibalistic? Discover five interesting facts about spiders that may surprise you.

5 Surprising Facts About Spiders
Did you know that spiders use electricity to build webs and are sometimes cannibalistic? Discover five interesting facts about spiders that may surprise you.

5 Surprising Facts About Spiders
Did you know that spiders use electricity to build webs and are sometimes cannibalistic? Discover five interesting facts about spiders that may surprise you.

5 Surprising Facts About Spiders
Did you know that spiders use electricity to build webs and are sometimes cannibalistic? Discover five interesting facts about spiders that may surprise you.

Ebola Virus
The Ebola virus is a single-stranded RNA virus that causes the deadly Ebola virus disease. Ebola outbreaks warrant serious concern as there is currently no cure for the disease.

Citric Acid Cycle
The citric acid cycle is a stage in cellular respiration that helps to harvest the energy stored in carbohydrates, proteins, and fats. These molecules are broken down into smaller components to be used as fuel by cells.

Endothelial Cells
Endothelial cells are flat epithelial cells that form the endothelium which lines blood vessels and lymphatic vessels. Endothelium acts as a semi-permeable barrier between body fluids and tissues.

Video Games Affect Brain Function
Studies indicate that video games affect brain function. Video gaming causes changes in brain structure that can improve cognitive function and visual attention.

Stem Cell Research
Stem cell research focuses on utilizing stem cells to generate specific cell types for the treatment of disease.

E. coli Bacteria
E. coli bacteria are among the numerous bacteria that reside in the digestive tract of humans and animals. While most E. coli strains are harmless, others can cause disease.

Methicillin-resistant Staphylococcus aureus - MRSA
MRSA is a strain of Staphylococcus aureus bacteria that is becoming increasingly difficult to treat as it has gained resistance to commonly used antibiotics.

Bones
Bones are a type of mineralized connective tissue containing collagen and calcium phosphate. Bones provide support and protection for body organs.

Genetic Recombination
In genetic recombination, genes on chromosomes are recombined to produce organisms with new gene combinations.

Vacuole Organelle
A vacuole is a fluid-filled organelle found mostly in plant cells and fungi. Vacuoles perform a number of important functions including detoxification.

Lymphatic Vessels - Description
Lymphatic vessels filter and transport fluid away from tissues before returning it to the blood. This helps to maintain normal blood volume and pressure.

Reproductive System
The male reproductive system consists of sexual organs, accessory glands, and a series of duct systems that provide a pathway for fertile sperm cells to exit the body.

Gonads - Testes and Ovaries Overview
Gonads are reproductive organs that produce sex hormones and support gamete development. Male gonads are the testes and female gonads are the ovaries.

Hormones
Hormones are specific molecules that acts as chemical messengers in the body. Hormones regulate various activities including growth and reproduction.

Reproductive System
The reproductive system consists of organs, ducts, and glands that produce or support the development of male and female gametes.

Thymus Gland Definition and Function
The thymus is a small glandular structure that regulates the immune system through the production of specific immune cells called lymphocytes.

Glands - The Endocrine System Chart
The endocrine system regulates vital processes in the body including growth and sexual development. It's comprised of several major endocrine glands.

The Cell Cycle of Growth and Replication
Cells grow and replicate through an ordered series of events called the cell cycle.

White Blood Cell
Also called leukocytes, white blood cells play an important role in the immune system by protecting the body from infectious agents.

Normal Cells Compared to Cancer Cells
How do normal cells differ from cancer cells? Learn about the properties of normal cells versus cancer cells.

Kidney (Definition, Function, Location)
The main role of the kidneys is to filter blood of toxins and produce urine. They also perform several regulatory functions that are vital to life.

Lymphatic System
Lymphatic system structures collect, filter, and return lymph to blood circulation.

Protein Structure
Protein structure is determined by the sequence of amino acids that form a protein. The four protein structure levels are primary, secondary, tertiary, and quaternary structure.

Amino Acid Structure (Illustrated Guide)
Amino acids are the basic components of proteins. They are essential to life because the proteins they form are involved in virtually all cell functions.

Sex-Linked Traits
Sex linked traits originate from genes found on sex chromosomes. Hemophilia is an example of a common sex linked disorder that is an X linked recessive trait.

The Spinal Cord Anatomy
The spinal cord is a cylindrical shaped bundle of nerve fibers that convey messages to and from the brain. The spongy spinal cord is protected by the irregular shaped bones of the spinal column called vertebrae.

Kidneys
The main role of the kidneys is to filter blood of toxins and produce urine. They also perform several regulatory functions that are vital to life.

What Is RNA? - Biology Homework Help
RNA molecules are unique nucleic acids that are essential to protein synthesis. The three primary classes of RNA molecules are messenger RNA, transfer RNA and ribosomal RNA.

RNA
RNA molecules are unique nucleic acids that are essential to protein synthesis. Transfer RNA translates the message within the nucleotide sequences of mRNA into specific amino acid sequences.

Skeletal System
The skeletal system is the support system for the body. It gives the body shape, form, and mobility while providing protection for sensitive organs.

Genetic Code - Overview & RNA Codon Table
The genetic code is the information in DNA and RNA that determines amino acid sequences in protein synthesis.

Sex Cells Information - Biology
Sex cells are reproductive cells. Male and female sex cells are dramatically different in size and shape. Female ova are large and round, while male sperm resemble long, motile projectiles.

Antibodies : Production, Structure, and Classes
Antibodies are specialized proteins that defend against foreign substances in the body. They are produced by white blood cells known as B cells that develop from bone marrow stem cells.

Lungs - Body Organ Functions and Abilities
The lungs are the organs responsible for breathing, the alternate inhalation and exhalation of air. The heart and lungs work together to provide oxygen to the cells of the body.

Antibiotic Resistance
Researchers are looking at different ways to combat antibiotic resistance in bacteria. These novel methods may lead to new antibiotics that can destroy resistant strains of bacteria.

Bioengineered Blood Vessels
Researchers have come up with a unique technique for creating bioengineered blood vessels.

Lymph Nodes - Explanation and Picture
Lymph nodes are specialized structures in the body that filter lymph fluid of harmful pathogens, cancer cells, and cellular waste.

Salmonella as a Cancer Fighter
Bacteria commonly known for their role in food poisoning are being put to good use. Researchers have genetically altered Salmonella to fight cancer.

Severed Spines
Researchers have restored nerve impulses to severed spinal cords,

Hidden Bacteria
Killing hidden bacteria in hard to reach places in dental equipment has been made easier.

Fat Cells To Nerve Cells
Researchers have transformed adult fat stem cells into nerve cells.

Cavity Fighting Bacteria
Researchers have genetically altered bacteria, turning them into cavity fighting bacteria.

Salivary Glands and Saliva
Find information on salivary glands, saliva, mucus and their function in digestion.

Spinal Cord Regeneration
Scientists are moving closer to spinal cord regeneration with a unique breakthrough.

Central Nervous System
The central nervous system (CNS) is responsible for processing information received from all parts of the body. The two main organs of the CNS are the brain and spinal cord.

Berries Lower Cholesterol
Studies have shown that certain kinds of berries lower cholesterol, specifically LDL cholesterol.

Bacteria In Turkeys
Turkeys have been found to be contaminated with bacteria. Testing is not being done for microbes such as Campylobacter bacteria in poultry products.

Mitosis Animation of Different Stages
This mitosis animation illustrates the different phases of mitosis in a plant cell.

Anatomy of the Stomach
Learn about the anatomy of the stomach and the types of cells that cover the stomach.

Anatomy of the Stomach - Gastric Motility
Learn about the anatomy of the stomach and gastric motility, the filling and emptying of the stomach.

Anatomy of the Stomach (With Pictures)
Learn about the anatomy of the stomach and the types of cells that cover the stomach.

Cancer Viruses - Introduction
Cancer viruses have the ability to genetically alter cells, causing them to experience abnormal new growth.

Cancer Viruses
Cancer viruses have the ability to genetically alter cells, causing them to experience abnormal new growth.

Animal Viruses
Animal viruses cause a wide range of diseases in humans and animals. Some cause persistent infections, while others can transform normal cells into tumor cells.

Animal Viruses - Overview and Picture
Animal viruses cause a wide range of diseases in humans and animals. Some cause persistent infections, while others can transform normal cells into tumor cells.

Golgi Complex
The Golgi complex, also called the Golgi apparatus, is a membranous structure found in plant and animal cells. It processes, sorts, and generates molecules necessary for proper cell function.

Plant Tissue Systems - Vascular Tissue System
Plant tissue systems are composed of dermal tissue, vascular tissue, and ground tissue systems. These systems provide support, nutrient formation and transportation, growth, and protection for a plant. Page 2.

Plant Tissue Systems
Plant tissue systems are composed of dermal tissue, vascular tissue, and ground tissue systems. These systems provide support, nutrient formation and transportation, growth, and protection for a plant.

Golgi Apparatus
The Golgi apparatus, also called the Golgi complex, is found in plant and animal cells. It processes and generates molecules for proper cell function.

The Biology of Carbohydrates
Carbohydrates are one of the four major classes of organic compounds in living cells. The term carbohydrate is used when referring to a saccharide or sugar and its derivatives.

Plant Viruses
Viruses are capable of infecting various types of organisms including animals, bacteria, and even plants. Plant viruses cause plant diseases that negatively affect viable crop production.

Plant Viruses - Types of Transmissions
Viruses are capable of infecting various types of organisms including animals, bacteria, and even plants. Plant viruses cause plant diseases that negatively affect viable crop production.

Endoplasmic Reticulum: Structure and Function
The endoplasmic reticulum is a network of tubules and flattened sacs that produce and process lipids and proteins in plant and animal cells.

Carotid Arteries
The carotid arteries are blood vessels that supply blood to the head, neck and brain.

Coronary Arteries
Information and resources pertaining to the coronary arteries of the heart.

Virus Quiz
Test your knowledge of viruses. Take the Virus Quiz.

Myocardium - Biology Glossary Definition
Information and resources pertaining to the myocardium of the heart.

Cardiovascular System
The cardiovascular system is responsible for transporting nutrients and removing gaseous waste from the body. This system is comprised of the heart and the circulatory system.

Third Ventricle
The third ventricle is part of a network of linked cavities in the brain that extend to form the central canal of the spinal cord.

Biology Prefixes and Suffixes Quiz
Take the Biology Prefixes and Suffixes Quiz and discover the meanings of difficult biology terms.

Pulmonary Artery - Photo of the Heart
Information and resources pertaining to the pulmonary artery of the heart.

All About Proteins - Structure and Synthesis
Proteins are very important molecules in cells. They have many diverse functions and all are typically constructed from one set of 20 amino acids.

Predator or Prey Game
Play the Predator or Prey game! In this game you must choose the correct predator or prey for each question.

Bacteriophage (Virus That Infects Bacteria)
A bacteriophage is a virus that infects bacteria.

Artery Description - Image and Definition
An artery is an elastic blood vessel that transports blood away from the heart. Pulmonary and systemic arteries are two main types of arteries.

Artery Structure - Image and Definition
An artery is an elastic blood vessel that transports blood away from the heart. Page 2.

What Is a Capillary? (Illustrated Guide)
A capillary is an extremely small blood vessel located within the body tissues. Gasses, nutrients, and fluids are exchanged through capillaries.

Capillary Fluid Exchange
Capillaries are where fluids, gasses, nutrients, and wastes are exchanged between the blood and body tissues.

Microcirculation
Microcirculation deals with the circulation of blood from the heart to arteries, capillaries and veins.

Hand Sanitizers vs. Soap and Water
Should you wash your hands with a hand sanitizer or soap and water?

Venae Cavae Veins - Human Anatomy Resources
The superior vena cava and inferior vena cava are the two largest veins in the body.

What Is a Vein? Definition, Types and Illustration
A vein is an elastic blood vessel that transports blood from various regions of the body to the heart. Veins can be categorized into different types.

Vein Structure - Explanation & Illustration
A vein is an elastic blood vessel that transports blood from various regions of the body to the heart. Page 2.

Ventricles of the Heart
The ventricles of the heart function to pump blood to the entire body.

Meiosis Diagrams
These meiosis diagrams explain the process of meiosis in eukaryotic cells.

Meiosis Animation
This meiosis animation illustrates the different phases of meiosis I and compares them to phases in mitosis.

What Is a Vein? Definition, Types and Illustration
A vein is an elastic blood vessel that transports blood from various regions of the body to the heart. Veins can be categorized into pulmonary, systemic, superficial, and deep veins.

Mendel's Law of Segregation - Genes and Traits
The principles that govern heredity were discovered by a monk named Gregor Mendel in the 1860's. One of these principles is now called Mendel's law of segregation.

Mendel's Law of Segregation
The principles that govern heredity were discovered by a monk named Gregor Mendel in the 1860's. One of these principles is now called Mendel's law of segregation.

Mendel's Law of Segregation
The principles that govern heredity were discovered by a monk named Gregor Mendel in the 1860's. One of these principles is now called Mendel's law of segregation.

Mendel's Law of Segregation: Genotype and Phenotype
The principles that govern heredity were discovered by a monk named Gregor Mendel in the 1860's. One of these principles is now called Mendel's law of segregation.

Meiosis Animation
This meiosis animation illustrates the different phases of meiosis II.

Osmosis - Diffusion and Passive Transport
Osmosis is a special case of passive transport. In osmosis water diffuses from a hypotonic (low solute concentrated) solution to a hypertonic (high solute concentrated) solution. Page 3.

All About Animal Cells
Animal cells are eukaryotic cells that contain various membrane-bound organelles.

Diffusion: Passive Transport and Facilitated Diffusion
Diffusion is the tendency of molecules to spread into an available space. The diffusion of substances across a membrane is called passive transport.

Facilitated Diffusion - Diffusion and Passive Transport
Facilitated diffusion is a type of passive transport that allows substances to cross membranes with the assistance of special transport proteins. Page 2.

Viruses: Overview - Biology Slideshow
Viruses are unique in that they have been classified as both living and nonliving at various points in the history biology. Learn about virus structure, DNA, capsids and more.

Skin Layers: Epidermis - Integumentary System
The integumentary system consists of the largest organ in the body, the skin. This organ protects the internal structures of the body from damage.

Viruses: Capsids - Biology Slideshow
Viruses are unique in that they have been classified as both living and nonliving at various points in the history biology. Learn about virus structure, DNA, capsids and more. Page 2.

Kinetochore Fibers
Definition of the term kinetochore fibers.

Brachiocephalic Artery
The brachiocephalic artery supplies oxygenated blood from the aorta to the head, neck and arm regions of the body.

Reproduction in Animals: Asexual Reproduction
In asexual reproduction, one individual produces offspring that are genetically identical to itself. Common forms of asexual reproduction include budding, regeneration, and parthenogenesis.

Immune System Quiz
Take the Immune System Quiz and find out how much you know about the immune system.

Reproduction in Animals: Asexual Reproduction
An introduction to the mechanisms of asexual reproduction in animals.

Reproduction in Animals: Asexual Reproduction
An introduction to the mechanisms of asexual reproduction in animals.

Reproduction in Animals: Asexual Reproduction
An introduction to the mechanisms of asexual reproduction in animals.

Reproduction in Animals: Asexual Reproduction
An introduction to the mechanisms of asexual reproduction in animals.

What Is DNA Transcription?
DNA transcription is a process that involves the transcribing of genetic information from DNA to RNA. Genes are transcribed in order to produce proteins.

How to Make a Lung Model
Try this simple demonstration that shows how to make a working lung model.

Hangover Remedies-Hangover Prevention
Information on hangover remedies and hangover treatments.

Plant Cell Quiz
Take the Plant Cell Quiz and find out how much you know about plant cells and tissues.

How Chromosomes Determine Sex
What is the relationship between chromosomes and sex? Sex is determined by the presence or absence of certain chromosomes.

Human Body Project Ideas
Human body projects and studies allow us to get a better understanding of the human body. The following human body science project ideas introduce topics for exploration through experimentation.

Scientific Method - Definition and Examples
The scientific method is a series of steps followed by scientific investigators to answer specific questions about the natural world.

Ribosomes and Protein Assembly
Ribosomes are cell organelles that consist of RNA and proteins. They are responsible for assembling the proteins of a cell.

Chromatin: Structure and Function
Chromatin is a mass of genetic material composed of DNA and proteins that condenses to form chromosomes. Chromatin compresses DNA into a compact unit.

Archaea - Extreme Microscopic Organisms
Organisms from the Domain Archaea can exists under some of the most extreme conditions. They can survive in extremely hot, acidic, or alkaline environments.

Anatomy - Tips & Advice for Studying
Anatomy is the study of the structure of living organisms on a large and small scale. The most important thing to understand when studying anatomy is the terminology.

Study Aids
Biology study aids provide information to aid in your understanding of biology topics. Use these study aids to help you get a firm grasp on certain concepts or to sure up any gaps in knowledge in a particular area.

Food Chains
Food chains trace the transfer of food in an ecosystem from producers to consumers.

Five AP Biology Books
The top five AP Biology books picks.

Anatomy
Information and resources on the anatomy of the human body. Learn about the brain, heart, blood vessels and more.

Biology Prefixes and Suffixes
These pages are designed to give you the tools needed to understand the most common prefixes and suffixes in biology. By using these prefixes and suffixes, even the most difficult words can be easily understood.

Biology Prefixes and Suffixes: -penia
Biology prefixes and suffixes help us to understand biology terms. The suffix (-penia) means a deficiency. Osteopenia is a bone mineral deficiency.

Cellular Processes
Information on cellular processes of the body including cellular respiration and DNA transcription.

Physiology
Information on the various physiological processes including cardiac, exercise, and respiratory physiology.

Advance Placement Biology for Students
Information and resources to help you prepare for the AP Biology exam. Includes information on AP Biology books and helpful resources for topics covered on the exam.

Biology Prefixes and Suffixes - A
Common biology prefixes and suffixes beginning with the letter A.

Biology Prefixes and Suffixes - B
Find definitions to commonly used biology prefixes and suffixes beginning with the letter B.

Prefixes and Suffixes - C
Find definitions to commonly used biology prefixes and suffixes beginning with the letter C.

Prefixes and Suffixes - D
Find definitions to commonly used biology prefixes and suffixes beginning with the letter D.

Prefixes and Suffixes - E
Find definitions to commonly used biology prefixes and suffixes beginning with the letter E.

Prefixes and Suffixes - F
Find definitions to commonly used biology prefixes and suffixes beginning with the letter F.

Prefixes and Suffixes - G
Find definitions to commonly used biology prefixes and suffixes beginning with the letter G.

Prefixes and Suffixes - H
Find definitions to commonly used biology prefixes and suffixes beginning with the letter H.

Prefixes and Suffixes - I
Find definitions to commonly used biology prefixes and suffixes beginning with the letter I.

Prefixes and Suffixes - K
Find definitions to commonly used biology prefixes and suffixes beginning with the letter K.

Prefixes and Suffixes - L
Find definitions to commonly used biology prefixes and suffixes beginning with the letter L.

Prefixes and Suffixes - M
Find definitions to commonly used biology prefixes and suffixes beginning with the letter M.

Prefixes and Suffixes - N
Find definitions to commonly used biology prefixes and suffixes beginning with the letter N.

Prefixes and Suffixes - O
Find definitions to commonly used biology prefixes and suffixes beginning with the letter O.

Prefixes and Suffixes - P
Find definitions to commonly used biology prefixes and suffixes beginning with the letter P.

Prefixes and Suffixes - R
Find definitions to commonly used biology prefixes and suffixes beginning with the letter R.

Prefixes and Suffixes - S
Find definitions to commonly used biology prefixes and suffixes beginning with the letter S.

Prefixes and Suffixes - T
Find definitions to commonly used biology prefixes and suffixes beginning with the letter T.

Prefixes and Suffixes - U
Find definitions to commonly used biology prefixes and suffixes beginning with the letter U.

Prefixes and Suffixes - V
Find definitions to commonly used biology prefixes and suffixes beginning with the letter V.

Prefixes and Suffixes - X
Find definitions to commonly used biology prefixes and suffixes beginning with the letter X.

Prefixes and Suffixes - Z
Find definitions to commonly used biology prefixes and suffixes beginning with the letter Z.

Amphibians
Information on amphibians including a tutorial on frog, salamander, and newt embryonic development.

Animal Behavior
Why do bees dance when they find food? Can animals detects earthquakes? Learn why animals exhibit certain behavioral characteristics.

Animal Cams
Information and resources pertaining to animal cams.

Basic Genetics
Information and resources for understanding basic genetics concepts.

Birds
Information and resources pertaining to birds.

Cell Anatomy
Explore the structure and function of the parts of a eukaryotic cell. Learn about the nucleus of the cell, ribosomes, mitochondria and more.

Insects
Information on all kinds of insects including beetles, butterflies, bees and more.

Mammals
Learn about the characteristics that differentiate mammals from other vertebrates.

Marine Biology
Information on marine animal species, aquatic communities, marine biology careers and more.

Mendelian Genetics
Information on the basic principles that govern heredity, which were discovered by Gregor Mendel. Learn about Mendel's law of segregation and independent assortment.

Science Fair Resources
Information on science fair project kits, science fair project books, science gifts, and more.

Advanced Placement Biology
Information and resources pertaining to high school advanced placement biology.

Mitosis Glossary
This mitosis glossary is a good resource for finding succinct, practical, and meaningful biology definitions for common mitosis terms.

Biology Homework Help
Resources and information to help you answer some of your biology homework questions.

Biology Lab
A collection of biology lab information including lab How Tos relating to various biology lab experiments.

Biology Lesson Plans
Lesson plans and student activities for elementary through high school teachers and educators.

Biology Programs
Information on U. S. college and university biology programs.

Online Dissections
Information and resources pertaining to virtual online dissections and dissection quizzes.

Summer Programs/Internships
Summer research programs and internships for advanced high school and college undergraduate students.

Biology Prefixes and Suffixes: glyco-, gluco-
Biology prefixes and suffixes help us to understand biology terms. The prefix (glyco-) means a sugar or refers to a substance that contains a sugar.

Dihybrid Cross - A Genetics Definition
A dihybrid cross is breeding experiment between organisms that differ in two traits. The parent organisms have different allele pairs for these traits.

Mendel's Law of Segregation
The principles that govern heredity were discovered by a monk named Gregor Mendel in the 1860's. One of these principles is now called Mendel's law of segregation.

Mendel's Law of Segregation
The principles that govern heredity were discovered by a monk named Gregor Mendel in the 1860's. One of these principles is now called Mendel's law of segregation.

Circulatory System: Pulmonary and Systemic Circuits
The circulatory system circulates blood by pulmonary and systemic circuits. These pathways transport blood between the heart and the rest of the body.

Biology
Biology.

Biology Prefixes and Suffixes: proto-
Biology prefixes and suffixes help us to understand biology terms. The prefix (proto-) means before, first, primitive or original.

Biology Prefixes and Suffixes: -ase
Biology prefixes and suffixes help us to understand biology terms. The suffix (-ase) is used to signify an enzyme or identify a certain class of enzymes.

Genetic Variation: Causes and Examples
In genetic variation, the alleles of organisms within a population change. This change may result from mutation, gene flow, or sexual reproduction.

DNA Replication Process and Steps
DNA replication is the process of copying the DNA within our cells. This process involves RNA and several enzymes, including DNA polymerase and primase.

Biology
Biology.

Spindle Fibers - Definition
Spindle fibers are aggregates of microtubules that move chromosomes during cell division.

What Is Diffusion?
Diffusion is the tendency of molecules to spread into an available area. Types of diffusion include passive diffusion, facilitated diffusion and osmosis.

Metabolic Functions of the Liver
Information on the metabolic functions of the liver including information on carbohydrate, fat and protein metabolism.

Scientific Name Game
In the Scientific Name Game your mission is to identify the correct organism for the given scientific name.

College & University Biology Programs - Texas
biology programs at colleges and universities in Texas

The Biology of Anger
Image: Ian Kahn / FreeDigitalPhotos.net What changes occur in the body when we get angry? Scientists from the University of Valencia have discovered how

Bacterial Propagation
This salmonella bacterium is undergoing the process of binary fission.Image: Janice Haney Carr/CDC Bacteria propagate or reproduce most commonly by a kind of

What Is a Haploid Cell? - Definition in Biology
Four haploid cells are produced from one parent cell.© John C. GlaseA haploid cell is a cell that contains one complete set of chromosomes. Our sex cells

Types of Circulatory Systems
There are two main types of circulatory systems in higher organisms: open and closed circulatory systems. In an open circulatory system, blood mixes with

What is Cellular Respiration?
We all need energy to function. We get this energy from the foods we eat. The most efficient way for cells to harvest energy stored in food is through

What Are Lipids?
Most people think of lipids negatively because they associate them with fats. Although some lipids are classified as fats, lipids are not

What Are Ribosomes?
Ribosome The Virtual Cell Ribosomes are the protein assemblers of a eukaryotic cell. They are typically composed of two subunits: a large subunit

What are Temperate Forests?
Photo: USFWS Temperate forests are areas with high levels of precipitation and humidity. These forests also contain a variety of deciduous trees.

All About Deserts
Sand Dunes Photo courtesy PDPhoto.org Deserts are dry areas that experience extremely small amounts of rainfall. One of the biggest misconceptions about

Capillary Definition - Biology and Anatomy Terms
A capillary is an extremely small blood vessel located within the tissues of the body, that transports blood from arteries to veins.

List of Ten Biology Facts About Cells
Connective Tissue CellsDr. Cecil Fox/National Cancer Institute Cells are the fundamental units of life. Whether they be unicellular or multicellular life

Binomial Nomenclature - Taxonomy Definition
Taxonomy is a hierarchical system for classifying and identifying organisms. This system was developed by Swedish scientist Carolus Linnaeus.

Plant Cell Structure
Plant Parenchyma Cell© Dennis Kunkel Plant cells are eukaryotic cells that are similar to animal cells. Unlike animal cells however, plant cells

Protein Synthesis - Translation
A ribosome and transfer RNA molecules work together to translate a messenger RNA molecule. The growing amino acid chain will become a protein.Credit: National

Why Men Are Typically Taller Than Women
Researchers have identified a genetic variant on the X chromosome that accounts for height differences between men and women.

Fascinating Animal Facts
Did you know that although polar bears look white, they actually have black skin? Discover several wondrous and fascinating facts about animals.

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Animal Studies and School Projects
Animal projects and studies are important for students to understanding various biological processes in animals and even humans. Here are some ideas.

What Is AP Biology? - Course Overview
What is AP Biology and why should I take it? The AP Biology course and exam allow students to gain credit for introductory college level biology courses.

Biology Games and Quizzes - Wrong Answer
Use these biology games and quizzes to test your biology trivia knowledge.

Biology (Introduction and the Basics)
The key to understanding biology is understanding basic biology concepts. Here you will find resources that will help you get started on understanding some basic biology principles.

Bio-Experiments - Experiment Examples and Suggestions
View exciting examples of biology experiments that can be used by parents and teachers at home or at school.

Home Biology Experiments and Projects
Experimentation is one of the best ways to learn about biology. Biology experiments are educational, exciting, and often times great fun.

Definition of the Biology Prefix eu
A definition of the prefix (eu-), from your About.com Biology Expert.

Bird Behavior
Information on speech, mating habits, migration and other behavioral characteristics exhibited by birds.

Advanced Placement Biology for Teachers
Information for teachers on how to develop a successful AP Biology program. Includes tips on how to obtain practice exams, quizzes, lab tips, books and more.

Forensics
Information on DNA fingerprinting, blood types, forensic science careers and more.

Jobs/Summer Programs
Assistance for job-hunters in the biological and biomedical sciences. Summer research program and internship information for precollege and college undergraduate students is also included.

Plant Databases
Plant names, plant genetics, and other plant information databases.

Animal Groups Name Game
Play the Animal Groups Name Game and discover the names of various animal groups.

Baby Animal Name Game II
Play the Baby Animal Name Game and discover the names of various baby animals.

Baby Animal Name Game
Do you know what a baby zebra is called? Play the Baby Animal Name Game and find out.

Baby Animal Name Game
Do you know what a baby zebra is called? Play the Baby Animal Name Game and find out.

Who Wants to be a Biology Whiz? - The trivia game.
Are you a Biology Whiz? Take the quiz to find out!

Biology Prefixes and Suffixes - S
Common biology prefixes and suffixes: biology prefixes and suffixes prefixes and suffixes common prefixes and suffixes prefixes suffixes septa