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nmdcat.online July 13, 2026

Concerning metabolic pathways, the end product commonly inhibits

A. The first enzyme of the pathway
✓
B. The last enzyme of the pathway
C. Every enzyme equally
D. Only enzymes outside the pathway

📝 Explanation

In feedback inhibition, the final product usually inhibits the first committed enzyme, preventing unnecessary synthesis of additional product. Concept tested: Mechanism of feedback inhibition.

📖 Additional Information

  • The first enzyme of the pathway
  • The last enzyme of the pathway
  • Every enzyme equally
  • Only enzymes outside the pathway

In feedback inhibition, the final product usually inhibits the first committed enzyme, preventing unnecessary synthesis of additional product. Concept tested: Mechanism of feedback inhibition.

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