A metabolic pathway results in the synthesis of a hormone. The presence of that hormone inhibits the second reaction in the pathway.Which of the following terms are appropriate descriptions of this inhibition?
A)End-product inhibition
B)Negative feedback
C)Covalent modification
D)Catabolic inhibition
E)Affinity

Question

A metabolic pathway results in the synthesis of a hormone.  The presence of that hormone inhibits the second reaction in the pathway.Which of the following terms are appropriate descriptions of this inhibition?
A)End-product inhibition
B)Negative feedback
C)Covalent modification
D)Catabolic inhibition
E)Affinity

Quizplus · Accepted Answer

End-product inhibition occurs when the final product of a metabolic pathway inhibits an enzyme involved earlier in the pathway, effectively regulating its own production. Negative feedback is a broader term that describes how the product of a process inhibits its own production process, which is exactly what's happening in this scenario.

A Metabolic Pathway Results in the Synthesis of a Hormone