Biology
Interesting facts about Charles Darwin
By: Shelly Barclay
Charles Darwin is famous for his controversial theories - even after his death. Today, he is something of a poster boy for evolutionists and something of a whipping boy for creationists. His brilliant insights into geology, botany, biology and even psychology are often overshadowed by...
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By: Sammy Stein
Inside each seed there is an embryonic plant. A seed contains the next generation of the plant it comes from and, as such, the plant goes to great lengths to ensure the survival of the seed. Every seed is different and some are large, some...
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By: Erich Rosenberger M.D.
Muscle cells are highly specialized cells that allow you to move. They are found in just about every type of animal. Not all muscle cells are the same. There are actually three major types of muscle in a person - each of which has a...
By: Sammy Stein
When identifying plants, it can be very difficult because many species have marked similarities. However, one of the easiest ways to identify plants is by their leaves. Leaves come in all sorts of shapes and forms. The aim of plant identification is to find characteristics...
By: Erich Rosenberger M.D.
Life on Earth takes on many different forms. One of the most basic categories of life the nature of the cells that constitute an organism. There are two major types of cells, eukaryotes and prokaryotes. Prokaryotes are bacteria, while every plant and animal is made...
By: Erich Rosenberger M.D.
Life on Earth is based on the concept of a cell. Cells are small structures that contain all the elements needed for life, from genetic material to energy storage and production. Sure, there are debates over the status of viruses are "life" - which don't...
By: Jay Miles
With the exception of viruses and anaerobic bacteria, oxygen is required by all living organisms to survive. Even plants, which for the most part absorb only carbon dioxide, need oxygen at night when there is no light for photosynthesis. Terrestrial animals obtain oxygen by breathing...
By: Erich Rosenberger M.D.
All of us start as a single cell. When a sperm gets together with an egg, the process of forming an embryo, then a fetus, and on to a baby, gets started. But a single cell can't do all the things required for a fully-grown...
Why fish have gills
By: Bob Lloyd
All animals respire which means that they use oxygen in the process of extracting energy from their foodstuffs, and produce carbon dioxide as a waste product.Mammals have lungs which provide a huge surface area for air to come into contact with blood so that...
By: Erich Rosenberger M.D.
There are many molecules that are involved in carrying, storing, and transporting genetic information. The most common of these is probably DNA. In addition to DNA, there is a category of molecules known as RNA. RNA is very similar to DNA in structure, but has...
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