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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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Plant Cell Defense

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A Balanced Vitamin Diet – Vitamins A – K

A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..

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Human Biology – Food and Digestion

This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..