Which of the following is true of feedback inhibition? Question options: A produ

Question

Which of the following is true of feedback inhibition?

Question options:

A product in the pathway is recycled and used as a substrate in an earlier step of the pathway.

The inhibition only affects the level of the product. It does not affect the level of intermediates.

A product in a pathway inhibits an enzyme earlier in the pathway thereby decreasing the amount of product formed. production of this pathway

A product in the pathway is recycled and used as a substrate in an earlier step of the pathway.

The inhibition only affects the level of the product. It does not affect the level of intermediates.

A product in a pathway inhibits an enzyme earlier in the pathway thereby decreasing the amount of product formed. production of this pathway

Explanation / Answer

ANSWER: option C is true for the feedback inhibition.

Feedback inhibition also termed as end-product inhibition. When a product in a pathway feedback and notifies one of the previous enzymes to stop.

Mechanism of feedback inhibition: One of the products of the pathway goes back and inhibits regulatory enzyme activity by binding to its allosteric site (other than the active site). Thus product-enzyme binding leads to conformational change of enzyme temporarily lose its ability to attach to a substrate.

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