Which of the following are chemical messengers that pass through the plasma membrane of cells and have receptor molecules in the cytoplasm?
A) insulin
B) nitric oxide
C) testosterone
D) B and C only
E) A, B, and C
Answer: D
Which of the following are chemical messengers that pass through the plasma membrane of cells and have receptor molecules in the cytoplasm?
A) insulin
B) nitric oxide
C) testosterone
D) B and C only
E) A, B, and C
Answer: D