Biology: Most Popular Articles
These articles are the most popular over the last month.
Cellular Respiration
Cellular respiration is a process by which cells harvest the energy stored in food. Glycolysis, the citric acid cycle, and electron transport are the three main processes of cellular respiration.
Cellular respiration is a process by which cells harvest the energy stored in food. Glycolysis, the citric acid cycle, and electron transport are the three main processes of cellular respiration.
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.
Stages of Mitosis
A stage-by-stage guide to the phases of mitosis.
A stage-by-stage guide to the phases of mitosis.
Stages of Meiosis
A stage-by-stage guide to the phases of meiosis.
A stage-by-stage guide to the phases of meiosis.
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.
Allele
Definition of allele.
Definition of allele.
Sanitizers vs. Soap
Hand sanitizers vs soap and water, which is better?
Hand sanitizers vs soap and water, which is better?
Incomplete Dominance
Definition of the term incomplete dominance.
Definition of the term incomplete dominance.
Anatomy of the Brain
Information and resources pertaining to the anatomy of the brain.
Information and resources pertaining to the anatomy of the brain.
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.
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.
Ribosomes
Explore the structure and function of eukaryotic ribosomes.
Explore the structure and function of eukaryotic ribosomes.
Chromosomes and Gender
What is the relationship between chromosomes and gender? Gender is determined by the presence or absence of certain chromosomes.
What is the relationship between chromosomes and gender? Gender is determined by the presence or absence of certain chromosomes.
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.
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.
Homozygous - A Genetics Definition
Definition of homozygous.: heterozygous definition law of segregation principle of heredity seed shape independent assortment
Definition of homozygous.: heterozygous definition law of segregation principle of heredity seed shape independent assortment
Aorta
Information and resources pertaining to the aorta of the heart.
Information and resources pertaining to the aorta of the heart.
Artery
An artery is an elastic blood vessel that transports blood away from the heart. Pulmonary and systemic arteries are two main types of arteries.
An artery is an elastic blood vessel that transports blood away from the heart. Pulmonary and systemic arteries are two main types of arteries.
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.
Mendel's Law of Segregation - A Genetics Definition
Definition of Mendel's law of segregation.: law of independent assortment law of segregation principle of heredity page nbsp mendel
Definition of Mendel's law of segregation.: law of independent assortment law of segregation principle of heredity page nbsp mendel
Six Kingdoms of Life
Living organisms are classified into three Domains and into one of six Kingdoms of life.
Living organisms are classified into three Domains and into one of six Kingdoms of life.
Connective Tissue
Explore the structure and function of animal tissues, including connective tissue.
Explore the structure and function of animal tissues, including connective tissue.
Blood Vessels
Information and resources pertaining to blood vessels.
Information and resources pertaining to blood vessels.
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.
Flowering Plants
Learn about the characteristics and parts of a flowering plant.
Learn about the characteristics and parts of a flowering plant.
Chromatin - A Cell Biology Definition
Definition of chromatin.: page nbsp cell biology organelle nerve center genetic material
Definition of chromatin.: page nbsp cell biology organelle nerve center genetic material
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.
Make a DNA Model Using Candy
Discover a fun way to make a DNA model using candy.
Discover a fun way to make a DNA model using candy.
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.
Heterozygous - A Genetics Definition
Definition of heterozygous.: law of segregation principle of heredity seed shape heterozygous plant independent assortment
Definition of heterozygous.: law of segregation principle of heredity seed shape heterozygous plant independent assortment
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.
Centrioles
Information and resources pertaining to centrioles and cell division.
Information and resources pertaining to centrioles and cell division.
The Cell-Cell Structure
Take a journey into the cell to find out about the cell structure of both prokaryotic cells and eukaryotic cells.
Take a journey into the cell to find out about the cell structure of both prokaryotic cells and eukaryotic cells.
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.
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.
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.
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.
Capillary
A capillary is an extremely small blood vessel located within the tissues of the body.
A capillary is an extremely small blood vessel located within the tissues of the body.
Temperate Grasslands
Temperate grasslands are savanna-like areas located in cold climate regions.
Temperate grasslands are savanna-like areas located in cold climate regions.
Anatomy of the Brain - Pons
Information and resources pertaining to the pons: medulla oblongata images brain pons pons function anatomy of the brain autonomic functions
Information and resources pertaining to the pons: medulla oblongata images brain pons pons function anatomy of the brain autonomic functions
Journey into the Cell: The Endoplasmic Reticulum
Explore the structure and function of the eukaryotic endoplasmic reticulum.
Explore the structure and function of the eukaryotic endoplasmic reticulum.
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.
Nucleus - A Cell Biology Definition
Definition of nucleus.: chromosome definition page nbsp eukaryotic cell organelle cell biology
Definition of nucleus.: chromosome definition page nbsp eukaryotic cell organelle cell biology
Organs of the Body - Anatomy of the Heart
Information and resources pertaining to the heart.
Information and resources pertaining to the heart.
Frog Anatomy
Information on internal and external frog anatomy.
Information on internal and external frog anatomy.
Sexual Reproduction
An introduction to the mechanisms of sexual reproduction in animals.
An introduction to the mechanisms of sexual reproduction in animals.
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.
Circulatory System
The circulatory system involves the circulation of blood which serves to move blood to a site or sites where it can be oxygenated, and where wastes can be disposed.
The circulatory system involves the circulation of blood which serves to move blood to a site or sites where it can be oxygenated, and where wastes can be disposed.
The Effects of Carbon Monoxide
Information and resources pertaining to carbon monoxide poisoning.
Information and resources pertaining to carbon monoxide poisoning.
Biology Prefixes and Suffixes
Learn about common biology prefixes and suffixes.
Learn about common biology prefixes and suffixes.
Heterozygous
Definition of the word heterozygous.
Definition of the word heterozygous.
Vein
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.
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.
Mitosis Animation
Animation of the phases of mitosis.: phases of mitosis cell animation daughter cells prophase telophase
Animation of the phases of mitosis.: phases of mitosis cell animation daughter cells prophase telophase
Reproduction
Discover the many ways that animals can reproduce through asexual reproduction.
Discover the many ways that animals can reproduce through asexual reproduction.
Anatomy of the Brain - Thalamus
Information and resources pertaining to the thalamus
Information and resources pertaining to the thalamus
Diffusion
Diffusion is the tendency of molecules to spread into an available space. The diffusion of substances across a membrane is called passive transport.
Diffusion is the tendency of molecules to spread into an available space. The diffusion of substances across a membrane is called passive transport.
Anatomy of the Brain - Hypothalamus
Information and resources pertaining to the hypothalamus
Information and resources pertaining to the hypothalamus
Biology Lab Reports
If you are taking a biology course, you are going to write biology lab reports. Learn the proper method for writing biology lab reports.
If you are taking a biology course, you are going to write biology lab reports. Learn the proper method for writing biology lab reports.
Centrioles - A Cell Biology Definition
Definition of centrioles.: cylindrical structures page nbsp animal cells animal cell cell biology
Definition of centrioles.: cylindrical structures page nbsp animal cells animal cell cell biology
Anatomy of the Brain - Medulla Oblongata
Information and resources pertaining to the medulla oblongata
Information and resources pertaining to the medulla oblongata
Cardiac Cycle
Information and resources pertaining to the cardiac cycle.
Information and resources pertaining to the cardiac cycle.
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.
Anatomy of the Brain - Cerebrum
Information and resources pertaining to the cerebrum
Information and resources pertaining to the cerebrum
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.
The Nucleus
Explore the structure and function of the nucleus in eukaryotic cells.
Explore the structure and function of the nucleus in eukaryotic cells.
Nervous Tissue
Explore the structure and function of nervous tissue and neurons, also called nerve cells.
Explore the structure and function of nervous tissue and neurons, also called nerve cells.
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.
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.
Spindle Fibers - A Cell Biology Definition
Definition of spindle fibers.: spindle fibers spindle poles page nbsp metaphase plate chromatids
Definition of spindle fibers.: spindle fibers spindle poles page nbsp metaphase plate chromatids
Alcohol Hangover
Information on how alcohol contributes to hangovers.
Information on how alcohol contributes to hangovers.
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.
Anatomy of the Brain - Brainstem
Information and resources pertaining to the brainstem
Information and resources pertaining to the brainstem
Diploid Cell - A Cell Biology Definition
Definition of a diploid cell.: genetics glossary biology glossary cell biology chromosomes heredity
Definition of a diploid cell.: genetics glossary biology glossary cell biology chromosomes heredity
Journey into the Cell: Mitochondria
Explore the structure and function of eukaryotic mitochondria.
Explore the structure and function of eukaryotic mitochondria.
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.
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.
Cytoplasm
The cytoplasm is a clear substance that consists of all of the contents outside of the nucleus of a membrane bound cell.
The cytoplasm is a clear substance that consists of all of the contents outside of the nucleus of a membrane bound cell.
Bacterial Reproduction
Bacterial reproduction most commonly occurs by a kind of cell division called binary fission. Other forms of bacterial reproduction include conjugation, transformation, and transduction.
Bacterial reproduction most commonly occurs by a kind of cell division called binary fission. Other forms of bacterial reproduction include conjugation, transformation, and transduction.
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.
Human Body Project Ideas
Human body projects and studies allow us to get a better understanding of the human body. The following human body project ideas introduce topics for exploration through experimentation.
Human body projects and studies allow us to get a better understanding of the human body. The following human body project ideas introduce topics for exploration through experimentation.
Meiosis Diagrams
These meiosis diagrams explain the process of meiosis in eukaryotic cells.
These meiosis diagrams explain the process of meiosis in eukaryotic cells.
Anatomy of the Brain - Basal ganglia
Information and resources pertaining to the basal ganglia
Information and resources pertaining to the basal ganglia
Savannas
Savannas are areas of open grassland with dispersed trees.
Savannas are areas of open grassland with dispersed trees.
Anatomy of the Brain - Amygdala
Information and resources pertaining to the amygdala
Information and resources pertaining to the amygdala
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.
Anatomy of the Brain - Broca's Area
Information and resources pertaining to Broca's area
Information and resources pertaining to Broca's area
Anatomy of the Brain - Hippocampus
Information and resources pertaining to the hippocampus
Information and resources pertaining to the hippocampus
Prokaryotes
Prokaryotes are single-celled organisms that are the earliest and most primitive forms of life on earth. Prokaryotes include bacteria and archaeans.
Prokaryotes are single-celled organisms that are the earliest and most primitive forms of life on earth. Prokaryotes include bacteria and archaeans.
Meiosis Animation I
Animation of the phases of meiosis I.: sea urchin embryology phases of mitosis chris patton number of chromosomes daughter cells
Animation of the phases of meiosis I.: sea urchin embryology phases of mitosis chris patton number of chromosomes daughter cells
Virus Replication
How do viruses reproduce?: virus replication obligate parasites virus particle viruses and cancer nbsp nbsp nbsp nbsp nbsp
How do viruses reproduce?: virus replication obligate parasites virus particle viruses and cancer nbsp nbsp nbsp nbsp nbsp
Homozygous
Definition of the word homozygous.
Definition of the word homozygous.
Anatomy of the Brain - Cerebral Cortex
Information and resources pertaining to the cerebral cortex
Information and resources pertaining to the cerebral cortex
Ventricles of the Heart
The ventricles of the heart function to pump blood to the entire body.
The ventricles of the heart function to pump blood to the entire body.
Anatomy of the Brain - Cranial Nerves Images
Fascinating images of the cranial nerves: anatomy of the brain cranial nerves hiv infection neuritis hiv
Fascinating images of the cranial nerves: anatomy of the brain cranial nerves hiv infection neuritis hiv
Anatomy of the Brain - Pituitary Gland
Information and resources pertaining to the pituitary gland
Information and resources pertaining to the pituitary gland
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.
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.
Animal Projects
Animal projects and studies are important to understanding various biological processes in animals and even humans. The following animal project ideas introduce areas of animal studies that can be explored through experimentation.
Animal projects and studies are important to understanding various biological processes in animals and even humans. The following animal project ideas introduce areas of animal studies that can be explored through experimentation.
Anatomy of the Brain - Temporal Lobes
Information and resources pertaining to the temporal lobes
Information and resources pertaining to the temporal lobes
Anatomy of the Brain - Cerebellum
Information and resources pertaining to the cerebellum
Information and resources pertaining to the cerebellum
Meiosis Quiz
Test your knowledge of meiosis. Take the Meiosis Quiz.
Test your knowledge of meiosis. Take the Meiosis Quiz.
Meiosis II
An introduction to the process of meiotic cell division focusing on meiosis II.
An introduction to the process of meiotic cell division focusing on meiosis II.
Predator or Prey Game
Select the predator or prey for various animals.: natural prey prey game walrus polar bear predator
Select the predator or prey for various animals.: natural prey prey game walrus polar bear predator
Anatomy of the Brain - Frontal Lobes
Information and resources pertaining to the frontal lobes
Information and resources pertaining to the frontal lobes
Haploid Cell - A Cell Biology Definition
Definition of a haploid cell.: genetics glossary biology glossary page nbsp cell biology set of chromosomes
Definition of a haploid cell.: genetics glossary biology glossary page nbsp cell biology set of chromosomes
Digestive System
Information and resources pertaining to the human digestive system.
Information and resources pertaining to the human digestive system.
How To Make a Working Model of the Lungs
an easy way to make a working model of the lungs
an easy way to make a working model of the lungs
Nucleic Acids
Nucleic acids allow organisms to transfer genetic information from one generation to the next.
Nucleic acids allow organisms to transfer genetic information from one generation to the next.
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.
Pulmonary Artery
Information and resources pertaining to the pulmonary artery of the heart.
Information and resources pertaining to the pulmonary artery of the heart.
Cardiovascular Quiz
Take the Cardiovascular System Quiz!
Take the Cardiovascular System Quiz!
Tricuspid Valve
Information and resources pertaining to the tricuspid valve of the heart.
Information and resources pertaining to the tricuspid valve of the heart.
10 Facts About Cells
The following 10 facts about cells will provide you with well known and perhaps little known tidbits of information about cells.
The following 10 facts about cells will provide you with well known and perhaps little known tidbits of information about cells.
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.
Monohybrid Cross
Definition of the term monohybrid cross.
Definition of the term monohybrid cross.
Architecture of the Liver
Information on the anatomy of the liver and biliary tract.
Information on the anatomy of the liver and biliary tract.
Viruses
An introduction to the structure of viruses.: protein shell virus replication virus particle viruses and cancer nbsp nbsp nbsp nbsp nbsp
An introduction to the structure of viruses.: protein shell virus replication virus particle viruses and cancer nbsp nbsp nbsp nbsp nbsp
Plant Project Ideas
The following plant project ideas provide suggestions for topics that can be explored through experimentation.
The following plant project ideas provide suggestions for topics that can be explored through experimentation.
Cell Theory
The Cell Theory is one of the basic principles of biology. It states that all living things are composed of cells.
The Cell Theory is one of the basic principles of biology. It states that all living things are composed of cells.
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 - Limbic System
Information and resources pertaining to the limbic system
Information and resources pertaining to the limbic system
Bacteriophages
Animations of the lytic life cycle of a bacteriophage.
Animations of the lytic life cycle of a bacteriophage.
Dihybrid Cross
Definition of the term dihybrid cross.
Definition of the term dihybrid cross.
Gametes - A Cell Biology Definition
Definition of gametes.: genetics glossary biology glossary diploid zygote reproductive cells page nbsp
Definition of gametes.: genetics glossary biology glossary diploid zygote reproductive cells page nbsp
Midbrain
Information and resources pertaining to the mesencephalon or midbrain.
Information and resources pertaining to the mesencephalon or midbrain.
Epithelial Tissue
Explore the structure and function of animal tissues, including epithelial tissue.
Explore the structure and function of animal tissues, including epithelial tissue.
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.
Genetics Quiz
Take the Genetics Quiz.: mendelian genetics genetics glossary law of segregation cross pollination independent assortment
Take the Genetics Quiz.: mendelian genetics genetics glossary law of segregation cross pollination independent assortment
Heart Valves
Information and resources pertaining to the human heart valves.
Information and resources pertaining to the human heart valves.
Cell Biology Glossary
This cell biology glossary is a good resource for finding succinct, practical, and meaningful biology definitions for various cell biology terms.
This cell biology glossary is a good resource for finding succinct, practical, and meaningful biology definitions for various cell biology terms.
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.
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.
Pericardium
Information and resources pertaining to the pericardium of the human heart.
Information and resources pertaining to the pericardium of the human heart.
Taxonomy
Taxonomy is a hierarchical system for classifying and identifying organisms.
Taxonomy is a hierarchical system for classifying and identifying organisms.
The Heart
The heart is the organ that supplies blood and oxygen to all parts of the body.
The heart is the organ that supplies blood and oxygen to all parts of the body.
Interphase
Onion root tip image in interphase of mitosis.
Onion root tip image in interphase of mitosis.
Wernicke's Area
Information and resources pertaining to Wernicke's area of the brain.
Information and resources pertaining to Wernicke's area of the brain.
Anatomy of the Brain - Corpus Callosum
Information and resources pertaining to the corpus callosum.
Information and resources pertaining to the corpus callosum.
Meiosis Study Guide
This study guide introduces you to the basics of meiosis and the meiotic process.
This study guide introduces you to the basics of meiosis and the meiotic process.
Anatomy of the Brain - Divisions of the Brain - Diencephalon
Information and resources pertaining to the diencephalon
Information and resources pertaining to the diencephalon