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

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Mutations involving a gene can similarly be harmful as the chromosomal mutations. This tutorial looks at the mutations o..

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Following nine months inside the mother's womb is the birth of the baby. Know the different stages of the birthing proce..

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Movement of Molecules Across Cell Membranes

Molecules move within the cell or from one cell to another through different strategies. Transport may be in the form of..

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