Which of the following is FALSE concerning enzymes?
Correct answer: D. Enzymes increase the amount of product created in a reaction
- A. Substrates must bind the enzyme's active site in order to initiate its effects
- B. Enzymes increase both the forward and reverse rate of a reaction
- C. Enzymes are not destroyed in a reaction and can be used in the same reaction countless times
- D. Enzymes increase the amount of product created in a reaction
Explanation
OPTION A: The catalytic activity of an enzyme is located in its active site. The substrate molecule is attached to the active site by non-covalent interactions like hydrogen bonding and hydrophobic interactions. Therefore, the substrate binds to the active site to initiate its effects.OPTION B: Enzymes increase the rate of both forward and reverse reactions.OPTION C: Enzymes are biological catalysts and therefore they speed up the biochemical reaction without being consumed.OPTION D: Enzymes only speed up the rate of reaction and are not concerned with the amount of product. Hence, D is the correct option.
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About Enzymes
Enzymes are biological catalysts that lower activation energy without being consumed, and their specificity is explained by the lock and key and induced fit models. Work includes the effects of temperature, pH and substrate concentration on reaction rate, plus competitive and non-competitive inhibition and how these differ.
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