Brain Quiz
Friday June 30, 2006
The brain is one of the largest and most important organs of the human body. This organ has a wide range of responsibilities. From coordinating our movement to managing our ... Read More
Brain Anatomy: Occipital Lobes
Wednesday June 28, 2006
The occipital lobes are the regions of the cerebral cortex that are responsible for vision. They are located in the caudal or back area of the brain.
Injuries to this ... Read More
Mitosis Study Guide
Friday June 23, 2006
Mitosis is a process of cell division in which the genetic material from a parent cell is divided equally between two cells.
Cell division enables organisms to grow and reproduce. Dividing ... Read More
Animal Webcams
Friday June 23, 2006
Have you ever wanted to know what ants really do inside an ant mound? Have you ever wanted to observe wild birds nesting and feeding?
Animal Webcams give you a unique ... Read More
Asexual Reproduction
Wednesday June 21, 2006
In asexual reproduction, one individual produces offspring that are genetically identical to itself. These offspring are clones that are produced by mitosis.
There are many invertebrates that produce by asexual reproduction. ... Read More
Bioweapons
Saturday June 17, 2006
Biological weapons are toxic materials produced from pathogenic organisms (usually microbes) or artificially manufactured toxic substances that are used to intentionally interfere with the biological processes of a host.
There ... Read More
How Vampire Bats Identify Prey
Saturday June 17, 2006
Did you know that vampire bats rely solely on the blood of other animals for their nutrition?
That being said, it is important for vampire bats to be able to identify ... Read More
Genetics Glossary: Heterogametic
Wednesday June 14, 2006
Heterogametic individuals are capable of producing gametes that contain one of two types of chromosomes.
For example, males produce two types of gametes, one with an X chromosome and another with ... Read More
Bacterial Immune System
Saturday June 10, 2006
Researchers have discovered that bacteria have a protein called H-NS, which allows them to recognize and deactivate DNA from other organisms.
Harmless bacteria are able to acquire DNA from other disease-causing ... Read More
Land Biomes: Chaparrals
Friday June 9, 2006
Chaparrals are dry areas typically found in coastline regions. The landscape is predominated by dense evergreen shrubs and grasses.
The hot, dry conditions create a favorable environment for fires, which occur ... Read More
Fig Trees and Archaeology
Wednesday June 7, 2006
In an article published in the magazine Science, researchers report that the fig tree may be one of the world's first domesticated plants.
The study indicates that these plants were domesticated ... Read More
Cardiovascular System Quiz
Saturday June 3, 2006
The cardiovascular system is responsible for transporting nutrients and removing gaseous waste from the body. This system includes the heart, blood vessels, and blood.
Take this quiz to test your knowledge ... Read More
Bacterial Sensing
Saturday June 3, 2006
Researchers from Cornell University have determined how bacteria sense changes in their environment.
The study, published in the May issue of Nature Structural and Molecular Biology, shows that receptors on ... Read More

