ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structu..
The sequence of amino acids determines the type of protein. Protein is synthesized according to the sequence of nucleoti..
The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial..
Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..
According to Charles Darwin's theory of natural selection, preferable genes are favored by nature in the gene pool, and ..
This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..
