Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..
Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..
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Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..
This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..
This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..
The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial..