Phosphofructokinase (PFK) Is a Highly Regulated Enzyme

Multiple Choice

Phosphofructokinase (PFK) is a highly regulated enzyme. Which of the following statements about PFK is correct?

A) AMP and ADP both bind to and stabilize the inactive conformation of F6-P.
B) ATP can overcome the inhibition by citrate.
C) Citrate is an inhibitor of PFK.
D) Acidic conditions from anaerobic metabolism activate PFK.
E) None of the above.