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27 April, 23:22

Which of the following statements about enzyme function is true? A. Enzyme function is independent of physical and chemical environmental factors such as pH and temperature. B. Enzymes increase the rate of chemical reactions by providing activation energy to the substrate. C. Enzymes increase the rate of chemical reactions by lowering activation energy barriers. D. Enzyme function is generally increased if the three-dimensional structure or conformation of an enzyme is altered.

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  1. 28 April, 03:11
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    C. Enzymes increase the rate of chemical reactions by lowering activation energy barriers.

    Explanation:

    Enzymes are biological catalysts which increases the rate of a chemical reaction. They do so by lowering the activation energy barrier between reactants and products.

    Enzyme function are dependent of physical and chemical environmental factors such as pH and temperature. High temperature will denature the enzyme and reduce or stop its activity while pH outside the range of that of the enzyme will slow down its activity.

    They don't provide activation energy to the substrate.
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