Biology: Most Popular Articles
These articles are the most popular over the last month.
Frog Anatomy
Information on internal and external frog anatomy.
Information on internal and external frog anatomy.
Online Dissections
Online dissections allow you to experience actual dissections without all of the mess.
Online dissections allow you to experience actual dissections without all of the mess.
Frog Dissection Quiz
Think you know all there is to know about frog dissections? Take this virtual frog dissection quiz.
Think you know all there is to know about frog dissections? Take this virtual frog dissection quiz.
Anatomy of the Brain - Organs of the Body
Information and resources pertaining to the brain.
Information and resources pertaining to the brain.
Biology Science Project Ideas
Here are some great ideas for biology related science fair projects related to animals, plants and the human body.
Here are some great ideas for biology related science fair projects related to animals, plants and the human body.
Organ Systems
The human body is made up of several organ systems that work together as one unit.
The human body is made up of several organ systems that work together as one unit.
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.
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.
Reproduction in Animals: Asexual Reproduction
An introduction to the mechanisms of asexual reproduction in animals.
An introduction to the mechanisms of asexual reproduction in animals.
Circulatory System
Information and resources pertaining to the circulatory system.
Information and resources pertaining to the circulatory system.
Organs of the Body - Anatomy of the Heart
Information and resources pertaining to the heart.
Information and resources pertaining to the heart.
Aorta
Information and resources pertaining to the aorta of the heart.
Information and resources pertaining to the aorta of the heart.
Frog Dissections: Male Frog Internal Anatomy
Information on male frog internal anatomy.
Information on male frog internal anatomy.
Six Kingdoms of Life
Living organisms are classified into one of six Kingdoms of life.
Living organisms are classified into one of six Kingdoms of life.
Mendel's Law of Independent Assortment
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 independent assortment.
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 independent assortment.
Temperate Grasslands
Temperate grasslands are savanna-like areas located in cold climate regions.
Temperate grasslands are savanna-like areas located in cold climate regions.
Digestive System
Information and resources pertaining to the human digestive system.
Information and resources pertaining to the human digestive system.
Arteries
Information and resources pertaining to arteries.
Information and resources pertaining to arteries.
Predator vs. Prey
The predator-prey relationship is important in maintaining balance among different animal species.
The predator-prey relationship is important in maintaining balance among different animal species.
Chromosomes and Gender
Chromosomes are long, stringy aggregates of genes that carry heredity information. Gender is determined by the presence or absence of certain chromosomes.
Chromosomes are long, stringy aggregates of genes that carry heredity information. Gender is determined by the presence or absence of certain chromosomes.
Allele
Definition of allele.
Definition of allele.
Stages of Mitosis
A stage-by-stage guide to the phases of mitosis.
A stage-by-stage guide to the phases of mitosis.
Cellular Respiration
Cellular respiration is a process by which cells harvest the energy stored in food.
Cellular respiration is a process by which cells harvest the energy stored in food.
Flowering Plants
Learn about the characteristics and parts of a flowering plant.
Learn about the characteristics and parts of a flowering plant.
Anatomy of the Brain - Thalamus
Information and resources pertaining to the thalamus
Information and resources pertaining to the thalamus
Anatomy of the Brain - Amygdala
Information and resources pertaining to the amygdala
Information and resources pertaining to the amygdala
DNA Models
Constructing DNA models is a great way to learn about DNA structure, function, and replication.
Constructing DNA models is a great way to learn about DNA structure, function, and replication.
Anatomy of the Brain - Brainstem
Information and resources pertaining to the brainstem
Information and resources pertaining to the brainstem
Anatomy of the Brain - Medulla Oblongata
Information and resources pertaining to the medulla oblongata
Information and resources pertaining to the medulla oblongata
Pulmonary Veins
Information and resources pertaining to the pulmonary veins of the heart.
Information and resources pertaining to the pulmonary veins of the heart.
The Study of Life
What is biology? Simply put, it is the study of life.
What is biology? Simply put, it is the study of life.
Homozygous - A Genetics Definition
Definition of homozygous.
Definition of homozygous.
Biology Games and Quizzes
Try these biology games and quizzes and find out how much you really know about biology.
Try these biology games and quizzes and find out how much you really know about biology.
Blood Vessels
Information and resources pertaining to blood vessels.
Information and resources pertaining to blood vessels.
Reproduction
Discover the many ways that animals can reproduce through asexual reproduction.
Discover the many ways that animals can reproduce through asexual reproduction.
Peripheral Nervous System
The nervous system can be divided into two parts, the central nervous system and the peripheral nervous system.
The nervous system can be divided into two parts, the central nervous system and the peripheral nervous system.
Reproduction in Animals: Sexual Reproduction
An introduction to the mechanisms of sexual reproduction in animals.
An introduction to the mechanisms of sexual reproduction in animals.
Female Frog Internal Anatomy
Frog dissection images and information on internal and external frog anatomy.
Frog dissection images and information on internal and external frog anatomy.
Anatomy of the Brain - Cerebellum
Information and resources pertaining to the cerebellum
Information and resources pertaining to the cerebellum
Male Frog Internal Anatomy
Frog dissection images and information on internal and external frog anatomy.
Frog dissection images and information on internal and external frog anatomy.
Anatomy of the Brain - Pons
Information and resources pertaining to the pons
Information and resources pertaining to the pons
Anatomy of the Brain - Cerebrum
Information and resources pertaining to the cerebrum
Information and resources pertaining to the cerebrum
Biology Prefixes and Suffixes
Learn about common biology prefixes and suffixes.
Learn about common biology prefixes and suffixes.
Organs of the Body - Anatomy of the Brain
Information and resources pertaining to the brain
Information and resources pertaining to the brain
Heterozygous - A Genetics Definition
Definition of heterozygous.
Definition of heterozygous.
Frog Oral Cavity
Dissection images of the frog oral cavity.
Dissection images of the frog oral cavity.
Mitosis Study Guide
This study guide introduces you to the basics of mitosis and the mitotic process.
This study guide introduces you to the basics of mitosis and the mitotic process.
Connective Tissue
Explore the structure and function of animal tissues, including connective tissue.
Explore the structure and function of animal tissues, including connective tissue.
Meiosis
An introduction to the process of meiosis.
An introduction to the process of meiosis.
Savannas
Savannas are areas of open grassland with dispersed trees.
Savannas are areas of open grassland with dispersed trees.
Capillaries
Information and resources pertaining to capillaries.
Information and resources pertaining to capillaries.
Digestive System - Salivary Glands and Saliva
Information on salivary glands, mucus, saliva and their function in digestion.
Information on salivary glands, mucus, saliva and their function in digestion.
Anatomy of the Stomach
Information on the anatomy of the stomach and the types of cells that cover the stomach.
Information on the anatomy of the stomach and the types of cells that cover the stomach.
Anatomy of the Brain - Hypothalamus
Information and resources pertaining to the hypothalamus
Information and resources pertaining to the hypothalamus
Cardiac Cycle
Information and resources pertaining to the cardiac cycle.
Information and resources pertaining to the cardiac cycle.
Land Biomes
Biomes are the world's major habitats. Land biomes are identified by the vegetation and animals that populate them.
Biomes are the world's major habitats. Land biomes are identified by the vegetation and animals that populate them.
Taigas
Taigas are forests of dense evergreen trees that extend across North America, Europe, and Asia.
Taigas are forests of dense evergreen trees that extend across North America, Europe, and Asia.
Axing the Family Tree
Startling insights into the evolution of animals
Startling insights into the evolution of animals
Anatomical Directional Terms - Caudal
Directional terms for anatomy
Directional terms for anatomy
Veins
Information and resources pertaining to veins.
Information and resources pertaining to veins.
Anatomy of the Brain - Central Sulcus (Fissure of Rolando)
Information and resources pertaining to the central sulcus
Information and resources pertaining to the central sulcus
Viruses
An introduction to the structure of viruses.
An introduction to the structure of viruses.
Tundra
The tundra biome is characterized by extremely cold temperatures and treeless, frozen landscapes.
The tundra biome is characterized by extremely cold temperatures and treeless, frozen landscapes.
Biology Homework Help
Need help with your biology homework? Find resources and information to help you answer some of your biology homework questions.
Need help with your biology homework? Find resources and information to help you answer some of your biology homework questions.
Muscle Tissue
Explore the structure and function of cardiac, smooth, and skeletal muscle tissue.
Explore the structure and function of cardiac, smooth, and skeletal muscle tissue.
Stages of Meiosis
A stage-by-stage guide to the phases of meiosis.
A stage-by-stage guide to the phases of meiosis.
Hand Sanitizers vs. Soap and Water
You've heard the claims of hand sanitizers being able to kill 99.9 percent of germs. Now read the truth.
You've heard the claims of hand sanitizers being able to kill 99.9 percent of germs. Now read the truth.
How To Make a DNA Model Using Candy
a simple way to construct a dna model using candy
a simple way to construct a dna model using candy
Virus Replication
How do viruses reproduce?
How do viruses reproduce?
Anatomy of the Brain - Hippocampus
Information and resources pertaining to the hippocampus
Information and resources pertaining to the hippocampus
Anatomy of the Brain - Temporal Lobes
Information and resources pertaining to the temporal lobes
Information and resources pertaining to the temporal lobes
Endangered Species
Endangered species are animals and plants that are on the verge of vanishing from the earth.
Endangered species are animals and plants that are on the verge of vanishing from the earth.
Protein Function
Proteins are very important molecules in our cells. Each protein within the body has a specific function.
Proteins are very important molecules in our cells. Each protein within the body has a specific function.
Plant Tissue Systems
A look at the structure and function of plant cells and tissues.
A look at the structure and function of plant cells and tissues.
Tropical Rain Forests
Tropical rain forests are characterized by dense vegetation, seasonally warm temperatures, and abundant rainfall.
Tropical rain forests are characterized by dense vegetation, seasonally warm temperatures, and abundant rainfall.
Incomplete Dominance - A Genetics Definition
Definition of incomplete dominance.
Definition of incomplete dominance.
Mitosis Animation
Animation of the phases of mitosis.
Animation of the phases of mitosis.
Temperate Forests
Temperate forests are areas with high levels of precipitation, humidity, and contain a variety of deciduous trees.
Temperate forests are areas with high levels of precipitation, humidity, and contain a variety of deciduous trees.
Photosynthesis
Photosynthesis is a process in which light energy is used to produce sugar and other organic compounds.
Photosynthesis is a process in which light energy is used to produce sugar and other organic compounds.
Cerebral Cortex
The cerebral cortex is the layer of the brain often referred to as gray matter. It is the outer portion of the cerebrum.
The cerebral cortex is the layer of the brain often referred to as gray matter. It is the outer portion of the cerebrum.
Anatomy of the Brain - Cerebral Cortex
Information and resources pertaining to the cerebral cortex
Information and resources pertaining to the cerebral cortex
Baby Animal Name Game
Do you know what a baby zebra is called? Play the Baby Animal Name Game and find out.
Do you know what a baby zebra is called? Play the Baby Animal Name Game and find out.
Anatomy of the Brain - Frontal Lobes
Information and resources pertaining to the frontal lobes
Information and resources pertaining to the frontal lobes
Journey into the Cell: The Nucleus
Explore the structure and function of the nucleus in eukaryotic cells.
Explore the structure and function of the nucleus in eukaryotic cells.
DNA Transcription
DNA transcription is a process that involves the transcribing of genetic information from DNA to RNA.
DNA transcription is a process that involves the transcribing of genetic information from DNA to RNA.
Mendel's Law of Segregation - A Genetics Definition
Definition of Mendel's law of segregation.
Definition of Mendel's law of segregation.
Pulmonary Artery
Information and resources pertaining to the pulmonary artery of the heart.
Information and resources pertaining to the pulmonary artery of the heart.
Bacterial Viruses
What are bacteriophages and how do they reproduce?
What are bacteriophages and how do they reproduce?
Biology Questions
Get answers to frequently asked biology related questions.
Get answers to frequently asked biology related questions.
Journey into the Cell
Learn about the structure of the fundamental unit of life -- the cell.
Learn about the structure of the fundamental unit of life -- the cell.
Anatomy of the Brain - Parietal Lobes
Information and resources pertaining to the parietal lobes
Information and resources pertaining to the parietal lobes
Anatomy of the Brain - Divisions of the Brain - Mesencephalon
Information and resources pertaining to the mesencephalon
Information and resources pertaining to the mesencephalon
The Effects of Carbon Monoxide
Information and resources pertaining to carbon monoxide poisoning.
Information and resources pertaining to carbon monoxide poisoning.
Science Fair Projects
Need help with science fair projects? Find suggestions and tips on how to make your science fair project a winner!
Need help with science fair projects? Find suggestions and tips on how to make your science fair project a winner!
Journey into the Cell: Mitochondria
Explore the structure and function of eukaryotic mitochondria.
Explore the structure and function of eukaryotic mitochondria.
Alcohol Hangover
Information on how alcohol contributes to hangovers.
Information on how alcohol contributes to hangovers.
Taxonomy
Taxonomy is a hierarchical system for classifying and identifying organisms.
Taxonomy is a hierarchical system for classifying and identifying organisms.
Heterozygous
Definition of the word heterozygous.
Definition of the word heterozygous.
Biology Study Tips
Need help studying for biology? I've got some great biology study tips for you.
Need help studying for biology? I've got some great biology study tips for you.
Phases of the Cardiac Cycle
The cardiac cycle is the cycle of events that occurs as the heart contracts.
The cardiac cycle is the cycle of events that occurs as the heart contracts.
Heart Valves
Information and resources pertaining to the human heart valves.
Information and resources pertaining to the human heart valves.
Pericardium
Information and resources pertaining to the pericardium of the human heart.
Information and resources pertaining to the pericardium of the human heart.
Virus Animations
Animations of the lytic life cycle of a bacteriophage.
Animations of the lytic life cycle of a bacteriophage.
Fascinating Animal Facts
Discover wondrous and fascinating facts about animals.
Discover wondrous and fascinating facts about animals.
Did You Know? - The Human Body
Discover interesting facts about the human body.
Discover interesting facts about the human body.
The Heart
Information and resources pertaining to the human heart.
Information and resources pertaining to the human heart.
Plant Cells and Tissues
A look at the structure and function of plant cells and tissues.
A look at the structure and function of plant cells and tissues.
Anatomical Directional Terms
Directional terms for anatomy
Directional terms for anatomy
Anatomy of the Brain - Limbic System
Information and resources pertaining to the limbic system
Information and resources pertaining to the limbic system
Directional Terms/Body Planes
Anatomical directional terms and body planes describe the locations of structures in relation to other structures or locations in the body.
Anatomical directional terms and body planes describe the locations of structures in relation to other structures or locations in the body.
Vena Cavae
Information and resources pertaining to the vena cavae of the heart.
Information and resources pertaining to the vena cavae of the heart.
Human Brain Quiz
Take the Human Brain Quiz and discover how much you know about the brain.
Take the Human Brain Quiz and discover how much you know about the brain.
Anatomy of the Brain - Cerebral Cortex Lobes
Information and resources pertaining to the cerebral cortex lobes
Information and resources pertaining to the cerebral cortex lobes
Overview of the Digestive System
Information on secretion, absorption and motility of the digestive system.
Information on secretion, absorption and motility of the digestive system.
Bio-Experiments
View exciting examples of biology experiments that can be used by parents and teachers at home or at school.
View exciting examples of biology experiments that can be used by parents and teachers at home or at school.
10 Steps of Glycolysis
In glycolysis, glucose is split into two molecules of a three-carbon sugar.
In glycolysis, glucose is split into two molecules of a three-carbon sugar.
Architecture of the Liver
Information on the anatomy of the liver and biliary tract.
Information on the anatomy of the liver and biliary tract.
Can Animals Sense Disasters?
A tsunami spawned by an earthquake in the Indian Ocean has caused massive destruction in Asia. Wild animals however, have been able to survive. Did they sense the disaster before it hit?
A tsunami spawned by an earthquake in the Indian Ocean has caused massive destruction in Asia. Wild animals however, have been able to survive. Did they sense the disaster before it hit?
Mendel's Law of Independent Assortment - A Genetics Definition
Definition of Mendel's law of independent assortment.
Definition of Mendel's law of independent assortment.
Predator or Prey Game
In this game you must choose the correct predator or prey for each question.
In this game you must choose the correct predator or prey for each question.
Meiosis Animation I
Animation of the phases of meiosis I.
Animation of the phases of meiosis I.
Anatomy of the Brain - Occipital Lobes
Information and resources pertaining to the occipital lobes
Information and resources pertaining to the occipital lobes
Cardiovascular Quiz
Take the Cardiovascular System Quiz!
Take the Cardiovascular System Quiz!
Body Circulatory System
Information and resources pertaining to the circulatory system.
Information and resources pertaining to the circulatory system.
Anatomy of the Brain - Basal ganglia
Information and resources pertaining to the basal ganglia
Information and resources pertaining to the basal ganglia
Cell Division - Mitosis
Explore the elegant process of mitosis or cell division that enables organisms to grow and reproduce.
Explore the elegant process of mitosis or cell division that enables organisms to grow and reproduce.
Chaparrals
Chaparrals are dry areas typically found in coastline regions.
Chaparrals are dry areas typically found in coastline regions.
Homozygous
Definition of the word homozygous.
Definition of the word homozygous.
Sex Chromosome Abnormalities
Sex chromosome abnormalities occur as a result of chromosome mutations brought on by mutagens or problems that occur during meiosis.
Sex chromosome abnormalities occur as a result of chromosome mutations brought on by mutagens or problems that occur during meiosis.
Tricuspid Valve
Information and resources pertaining to the tricuspid valve of the heart.
Information and resources pertaining to the tricuspid valve of the heart.
Frog Dissections: Female Frog Internal Anatomy
Information on female frog internal anatomy.
Information on female frog internal anatomy.
Lipids
Lipids are very diverse in both their respective structures and functions. Examples of lipids include fats, phospholipids and steroids.
Lipids are very diverse in both their respective structures and functions. Examples of lipids include fats, phospholipids and steroids.
Ventricles
Information and resources pertaining to the ventricles of the heart.
Information and resources pertaining to the ventricles of the heart.
Cloning Techniques
Techniques used in cloning.
Techniques used in cloning.
Top Biology Programs
The top biology programs from colleges and universities in the United States.
The top biology programs from colleges and universities in the United States.
Bacteria and Food Poisoning
Bacterial foodborne diseases strike millions of people each year. Here is a list of a few bacteria that cause food poisoning and foodborne illness.
Bacterial foodborne diseases strike millions of people each year. Here is a list of a few bacteria that cause food poisoning and foodborne illness.
Anatomy of the Brain - Pituitary Gland
Information and resources pertaining to the pituitary gland
Information and resources pertaining to the pituitary gland
Anatomical Directional Terms - Anterior
Directional terms for anatomy
Directional terms for anatomy
Genetics Basics
Genetics is the study of heredity or inheritance. These resources will assist in the understanding of basic genetics.
Genetics is the study of heredity or inheritance. These resources will assist in the understanding of basic genetics.
Limbic System
The limbic system is responsible for controlling various functions in the body. Structures of this system include the hippocampus, hypothalamus, and thalamus.
The limbic system is responsible for controlling various functions in the body. Structures of this system include the hippocampus, hypothalamus, and thalamus.
Gametes - A Cell Biology Definition
Definition of gametes.
Definition of gametes.
10 Great Biology Activities an
Biology activities and lessons allow students to investigate and learn about biology through hands on experience.
Biology activities and lessons allow students to investigate and learn about biology through hands on experience.
Mendelian Genetics Quiz
Think you know all there is to know about mendelian genetics? Take this genetics quiz.
Think you know all there is to know about mendelian genetics? Take this genetics quiz.