16. Which of the following could act as an uncoupler of electron transport and ATP synthesis?
A. The Fo base-piece of ATP synthase (without the Fl subunit)
B. Dinitrophenol
C. neither (a) nor (b)
D. Both (a) and (b)
17. Which of the following is not a mechanism for altering the flux of metabolites through the rate-determining step of a pathway?
A. Allosteric control of the enzyme activity
B. Diffusional coupling between adjacent active sites
C. Genetic control of the enzyme concentration
D. Covalent modification of the enzyme
18. Phosphofructokinase, the major flux-controlling enzyme of glycolysis is allosterically inhibited and activated respectively by
A. ATP and PEP
B. AMP and Pi
C. ATP and ADP
D. Citrate and ATP
19. Which of the following regulates glycolysis steps?
A. Phosphofructokinase
B. Hexose kinase
C. Pyruvate kinase
D. All of these
20. During glycolysis, the major energy generating step involves
A. pyruvate kinase
B. phosphoglycerate kinase
C. glyceraldehyde-3 -dehydrogenase
D. Phosphofructokinase