Testosterone has which of the following properties or mechanisms of action?
A) diffuses into the cell before binding to its receptor
B) causes autophosphorylation of the receptor upon binding
C) upon binding to the receptors activates production of cAMP
D) is transcribed and translated in response to GnRH

Question

Quizplus · Accepted Answer

Testosterone is a lipid-soluble hormone that can diffuse through the cell membrane and bind to intracellular receptors. Once inside the cell, it can bind to its receptor and directly influence gene expression. Autophosphorylation of the receptor (B) is not involved in the mechanism of action of testosterone. Testosterone does not activate the production of cAMP (C), which is a secondary messenger for many other hormones, such as epinephrine and glucagon. Testosterone is not transcribed and translated in response to GnRH (D), as it is synthesized in the testes and adrenal glands.

Testosterone Has Which of the Following Properties or Mechanisms of Action