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About Biology
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Cigarette Smoke Changes Shape of the Heart
Sat, 15 Nov 2008 06:00:00 +0000
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...
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Bleach as a Germ Killing Machine
Fri, 14 Nov 2008 23:15:00 +0000
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...
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Aquatic Biomes
Fri, 14 Nov 2008 22:40:00 +0000
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...
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Animal Defense Mechanisms
Sat, 08 Nov 2008 06:00:00 +0000
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...
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DNA Candy Model
Fri, 07 Nov 2008 22:32:00 +0000
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....
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What are Lysosomes?
Fri, 07 Nov 2008 22:30:00 +0000
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,...
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Know Your Immune System
Sat, 01 Nov 2008 06:30:00 +0000
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...
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The Nucleus
Sat, 01 Nov 2008 06:00:00 +0000
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...
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White Ghost and Vampire Plants
Fri, 31 Oct 2008 17:00:00 +0000
When I speak of white ghosts and vampires I don't mean evil spirits. I am referring to some unusual plants that have some interesting characteristics. These plants are living proof...
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What is Prophase?
Sat, 25 Oct 2008 06:00:00 +0000
Onion cell in prophase. © The Entangled Bank
Mitosis, a process of cell division, enables organisms to grow and reproduce. Dividing cells go through an ordered series...
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