Bio-Chemistry (M.Phil./Ph.D.) 2015 Panjab University Entrance Exam With Answers

Practice Mode:
40.

In the small intestine, cholera toxin acts by :

A: ADP-ribosylation of the G regulatory protein
B: Inhibition of adenyl cyclase
C: Activation of GTPase
D: Active absorption of NaCI

The answer is: A