Which is NOT typically a step in the cAMP second-messenger system?

A. A first messenger binds to a transmembrane receptor.
B. Active cAMP-dependent protein kinase phosphorylates cell proteins.
C. Adenylyl cyclase converts ATP into cAMP.
D. There is dissociation of G-protein subunits.
E. An activated G-protein subunit phosphorylates cAMP-dependent protein kinase.


Answer: E

Anatomy & Physiology

You might also like to view...

The nuclei of which cranial nerves are associated with the midbrain?

A) I and II B) II and III C) III and IV D) IV and V E) V and VI

Anatomy & Physiology

______________ is the inability to smell.

Fill in the blank(s) with the appropriate word(s).Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

Lysozyme is found in

A. saliva. B. urine. C. tears. D. both tears and saliva.

Anatomy & Physiology

A bursa is

A. a pad of fibrocartilage. B. a pad of fat. C. a sac of synovial fluid lined by a synovial membrane. D. None of the above

Anatomy & Physiology