31. The sugar which forms the major component of nucleic acids is
A. ribose
B. galactose
C. mannose
D. maltose
32. Under aerobic condition pyruvate is converted by pyruvate dehydrogenase to
A. phosphoenolpyruvate
B. acetyl CoA
C. lactate
D. glyceraldehyde 3 phosphate
33. Which of the following is not a disaccharide?
A. Amylose
B. Cellobiose
C. Lactose
D. None of these
34. Hexokinase activity in glycolysis is inhibited by
A. glucose 6- phosphate
B. fructose 6-phosphate
C. fructose 1,6 biphosphate
D. phosphofructokinase
35. The ultimate source of energy that sustains living systems is
A. glucose
B. oxygen
C. sunlight
D. carbon dioxide