Ribosome The Virtual Cell Ribosomes are the protein assemblers of a eukaryotic cell. They are typically composed of two subunits: a large subunit and a small subunit. These two ... Read More

Bacteriophage Structure© Gary E. Kaiser Did you know that viruses can infect bacteria? These types of viruses are called bacteriophages. They are perhaps the best understood viruses, ... Read More

A study published in the Journal of Nutrition suggests that you may want to rethink restricting your calorie intake during flu season. Calorie restriction makes it more difficult for the ... Read More

Thanksgiving is time to give thanks and eat turkey. The National Turkey Federation estimates that over ninety-five percent of Americans will eat turkey this Thanksgiving. For several decades researchers ... Read More

© Steve Berg In the cross-pollination between a true-breeding yellow pod plant and a true-breeding green pod plant, where green pod color is dominant, what will the resulting ... Read More

Human cells contain 23 pairs of chromosomes for a total of 46. There are 22 pairs of autosomes and one pair of sex chromosomes. The sex chromosomes are the X ... Read More

Public Domain Image We all know that smoking is bad for the body. Now researchers from the University of Illinois at Chicago have found evidence that cigarette smoke ... Read More

Chlorine bleach is a household staple that is an important weapon in the fight against germs. Have you ever wondered why bleach is so effective as an antimicrobial agent? If ... Read More

Texas Coastal EstuaryPhoto: USFWS Aquatic communities are the world's major water habitats. Like land biomes, aquatic communities can also be subdivided based on common characteristics. Two common designations of ... Read More

Leopard camouflaged in the grass.© USFWS/Gary Stolz Defense mechanisms are very important to all animal life. Animals must eat to survive. With predators always on the lookout for ... Read More

Making DNA models can be informative, fun, and in this case tasty. Learning to construct a DNA model using candy will make learning about this very important molecule more enjoyable. ... Read More

Lysosomes are membranous sacs of enzymes. They are made by the endoplasmic reticulum and Golgi complex. Lysosomes contain various hydrolytic enzymes that are capable of digesting nucleic acid, polysaccharides, fats, and ... Read More

The immune system is the body's natural defense mechanism. It protects us from invaders that we can't see, like viruses and bacteria. The immune system uses two types of defense mechanisms ... Read More

Nucleus with Nuclear Pores© Dennis Kunkel The nucleus is the control center of a cell. It contains the cell's hereditary information (DNA) and controls the cell's growth and ... Read More