How are small amounts of hormones amplified?

Question

Quizplus · Accepted Answer

Small amounts of hormones can be amplified through the stimulation of several cAMP-dependent protein kinase A molecules, which in turn activate many molecules of phosphorylase kinase. This signal transduction cascade results in a large response even though the initial amount of hormone was small. Option A is incorrect because it describes a 1:1 ratio of cAMP to kinase activation, which would not lead to significant amplification. Option B is incorrect because it is not a common mechanism for hormone amplification. Option D is incorrect because it is false; signal transduction cascades are commonly used to amplify hormone signaling.

How Are Small Amounts of Hormones Amplified