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CSS :: Respiratory System Physiology


61.  The enzyme converting glucose into glucose-6-phosphate during activation stage of Glycolysis is:
A. Glucokinase B. Phosphoglucomutase
C. Glucoisomerase D. None of these

62.  At the end of cleavage stage in Glycolysis we get:
A. One molecule of 3-phosphoglyceraldehyde B. One molecule of dihydroxy acetone phosphate
C. Both (a) & (b) D. None of these

63.  Enzyme bringing conversion of dihydroxy acetone phosphate into 3-phosphoglyceraldehyde is:
A. Triose phosphate isomerase B. Aldolase
C. Glyceromutase D. Triose mutase

64.  Enzyme bringing coversion of 3-phosphoglyceric acid into 2-phosphoglyceric acid is:
A. Aldolase B. Phosphoglyceric mutase
C. Enolase D. None of these

65.  Which of these enzymes is responsible for conversion of 2-phosphoglyceric acid into phosphoenolpyruvic acid:
A. Enolase B. Aldolase
C. Glycerokinase D. Glyceromutase

66.  At the end of Glycolysis how many molecules of ATP are synthesized:
A. One molecule of 3-phosphoglyceraldehyde B. Two molecules
C. Three molecules D. Four molecules

67.  Which of these substances are initially required to start Kerb's cycle:
A. Acetyl CoA B. Oxaloacetic acid
C. Both of these D. None of these

68.  To start the kreb's cycle, the pyruvic acid formed during Glycolysis is converted into:
A. Acetyl CoA which reacts with oxaloacetic acid to form citric acid B. Alpha-ketogluteric acid which forms oxaloacetic acid
C. Lactic acid that forms CO2 and H2O D. None of these

69.  During cellular respiration the electrons are received by which of the following substances:
A. NAD B. FAD
C. Cytochromes D. All of these

70.  Acetyl CoA used normally in Kreb's cycle is derived from pyruvic acid but it can also be formed from:
A. Fatty acids B. Amino acids
C. Both (a) & (b) D. None of them




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