BIOLOGY
ENZYMES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A) speeds up the rate of a reaction.
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B) reduces the amount of energy needed for a reaction to start.
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Both A and B are correct
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Neither A nor B are correct
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Detailed explanation-1: -A catalyst is a chemical that increases the rate of a chemical reaction without itself being changed by the reaction. The fact that they aren’t changed by participating in a reaction distinguishes catalysts from substrates, which are the reactants on which catalysts work.
Detailed explanation-2: -Explanation for Correct Answer: A catalyst increases the rate of the reaction by lowering the activation energy.
Detailed explanation-3: -The Catalytic Activity of Enzymes First, they increase the rate of chemical reactions without themselves being consumed or permanently altered by the reaction. Second, they increase reaction rates without altering the chemical equilibrium between reactants and products.
Detailed explanation-4: -Enzymes are a form of catalysts that speed up chemical reactions by lowering the activation energy. Catalysts are not consumed in the reaction.