What Is the Most Likely Mechanism by Which Testosterone Functions

question 19

Multiple Choice

What is the most likely mechanism by which testosterone functions inside a cell?

• A) It acts as a signal receptor that activates tyrosine kinases.
• B) It binds with a receptor protein that enters the nucleus and activates expression of specific genes.
• C) It acts as a steroid signal receptor that activates ion channel proteins in the plasma membrane.
• D) It coordinates a phosphorylation cascade that reduces spermatogenesis.

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