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The sequence of amino acids determines the type of protein. Protein is synthesized according to the sequence of nucleoti..

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The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..

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The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..

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Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..

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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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The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..