Testosterone functions inside a cell by A) acting as a signal ...

[TI]

Testosterone functions inside a cell by
A) acting as a signal receptor that activates tyrosine kinases.
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 spermatogenesis.

[coco]

In class, we found it was B. Good luck with the rest.

[TI]

Thank you, you were right!