Question

multiple choice question
a peptide hormone binds to its receptor on the cell surface. this binding activates a few second messengers, each of which goes on to activate multiple intracellular enzymes, which in turn activate many more intracellular enzymes. this is known as a(an):

○ enzyme cascade
○ hormone cascade
○ response cascade

Explanation:

A peptide - hormone binding to a receptor activates second messengers which activate intracellular enzymes in a step - by - step, amplified manner. This is characteristic of an enzyme cascade. Hormone cascade typically refers to a series of hormonal events in the endocrine system, and response cascade is a more general term. The described process is mainly about enzyme activation, so enzyme cascade is the most appropriate term.

Answer:

A. enzyme cascade