Essential Biochemistry - Enzymes (Section 3 - No. 12)
Which of the following can be considered as an example of feedback inhibition?
The product of a metabolic pathway inhibits an enzyme that acts early in the pathway.
The substrate of a metabolic pathway inhibits an enzyme that acts early in the pathway.
An enzyme binds to its product and activates it.
An enzyme speeds up a reaction.
Explication
Feedback inhibition involves the end product of a metabolic pathway inhibiting an earlier enzyme in that pathway to prevent the overproduction of the end product.