The MAIN purpose of feedback ihibition in a metabolic pathway is to
Correct answer: D. regulate the amount of product
- A. activate the enzymes
- B. alter the rate of reactions
- C. minimize the energy efficiency
- D. regulate the amount of product
Explanation
Feedback inhibition is a regulatory mechanism in which the end product of a metabolic pathway inhibits an enzyme involved early in the pathway. This process helps maintain homeostasis by ensuring that cells do not produce more of a substance than is needed. Option D is correct because feedback inhibition primarily serves to regulate the amount of product, preventing overproduction and waste. Option A is incorrect because activation is not the aim of feedback inhibition. Option B is incorrect because while it does alter reaction rates, the main goal is regulation of product levels. Option C is incorrect because the purpose is to maximize, not minimize, energy efficiency by preventing unnecessary reactions.
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About Enzyme Inhibitors
Enzyme inhibitors reduce reaction rate by interfering with enzyme-substrate interaction or catalytic activity. Coverage includes reversible competitive, non-competitive and uncompetitive inhibition, the effects of inhibitor concentration on reaction rate, and why competitive inhibition can be reduced by increasing substrate concentration.
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