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nmdcat.online June 27, 2026

Regarding feedback inhibition in metabolic pathways, the final product typically inhibits the activity of the

A. Last enzyme of the pathway
B. First enzyme of the pathway
✓
C. Substrate of the first reaction
D. All enzymes in the pathway simultaneously

📝 Explanation

Feedback inhibition is a regulatory mechanism where the end product of a metabolic pathway acts as an inhibitor of an enzyme earlier in the pathway, usually the first committed step. This prevents the unnecessary accumulation of the product and wasteful use of resources.

📖 Additional Information

  • Last enzyme of the pathway
  • First enzyme of the pathway
  • Substrate of the first reaction
  • All enzymes in the pathway simultaneously

Feedback inhibition is a regulatory mechanism where the end product of a metabolic pathway acts as an inhibitor of an enzyme earlier in the pathway, usually the first committed step. This prevents the unnecessary accumulation of the product and wasteful use of resources.

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