801. Glucose from the breakdown of glycogen is obtained in
A. the liver by phosphorolysis
B. the muscles by phosphorolysis
C. the muscles by hydrolysis
D. both (a) and (b)

802. Glycogen has
A. α-1,4 linkage
B. α-1,6 linkages
C. α-1,4 and α-1,6 linkages
D. α-1,4 and β-1,6 linkage

803. Membrane potential and the proton gradient
A. are both required to make ATP
B. are sufficient, separately, to make ATP from ADP + Pi;
C. reinforce one another when respiratory inhibitors are present
D. cancel one another when uncouplers are present

804. The irreversibility of the thiokinase reactions (formation of initial acyl-CoA)
A. make this activation reaction the committed step on the pathway
B. is due to the subsequent hydrolysis of the product
C. applies only to even-chain fatty acids
D. both (a) and (b)

805. Long-chain fatty acids are oxidized step-wise in one carbon units starting from the
A. carboxyl end
B. aliphatic end
C. both (a) and (b)
D. none of these

806. How many molecules of acetyl-CoA are produced in oxidation of palmitic acid (C16), which involves seven rounds of oxidation?
A. 6
B. 7
C. 8
D. 9

807. The oxidation of methanol (wood alcohol) in human retina tissue leads directly to the formation of
A. formaldehyde
B. sugars
C. CO2
D. none of these

808. The maximum energy per gram on oxidization is yielded from
A. fat
B. protein
C. glycogen
D. starch

809. The oxidation of methanol (wood alcohol) in human retina tissue indirectly leads to
A. pressure builds up
B. colour blindness
C. blindness
D. all of these

810. Each cycle of β-oxidation produces
A. 1 FADH2, 1 NAD+, and 1 acetyl-CoA
B. 1 FADH2, 1 NADH and 1 acetyl-CoA
C. 1 FADH2, 1 NADH and 2 CO2 molecules
D. 1 FAD, 1 NAD+ and 2 CO2 molecules

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