When an end product of a reaction pathway is in excess and inhibits the first enzyme of the pathway,this is an example of positive feedback.

Question

Quizplus · Accepted Answer

This is an example of negative feedback. In negative feedback, the end product of a pathway inhibits the first enzyme in the pathway in order to slow down or stop the pathway from producing too much of that end product. Positive feedback does the opposite, where the end product stimulates the pathway to produce more of that product.

When an End Product of a Reaction Pathway Is in Excess