BIOLOGY
ENZYMES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When an enzyme catalyzes a reaction, it increases the activation energy of the reaction.
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When an enzyme catalyzes a reaction, it decreases the activation energy of the reaction.
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When an enzyme catalyzes a reaction, it increases the activation energy of the product.
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When an enzyme catalyzes a reaction, it does not affect the activation energy of the reaction.
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Detailed explanation-1: -Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.
Detailed explanation-2: -Enzymes (and other catalysts) act by reducing the activation energy, thereby increasing the rate of reaction. The increased rate is the same in both the forward and reverse directions, since both must pass through the same transition state.
Detailed explanation-3: -Enzymes are proteins that catalyze biochemical reactions, which otherwise would not take place. These enzymes are essential for chemical processes like digestion and cellular metabolism.
Detailed explanation-4: -Enzymes are a specialized class of proteins responsible for catalyzing chemical reactions within the cell and thus are ideal drug targets.