Testosterone functions inside a cell by

Testosterone functions inside a cell by 





A) acting as a signal receptor that activates ion-channel proteins.

B) binding with a receptor protein that enters the nucleus and activates specific genes.

C) acting as a steroid signal receptor that activates ion-channel proteins.

D) becoming a second messenger that inhibits adenylyl cyclase.

E) coordinating a phosphorylation cascade that increases glycogen metabolism.






Answer: B


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