Respiratory System Physiology Test 07 Online Preparation

1. At the end of Glycolysis how many molecules of ATP are synthesized?

A. Three molecules

B. Four molecules

C. Two molecules

D. One molecule of 3-phosphoglyceraldehyde

2. To start the kreb's cycle, the pyruvic acid formed during Glycolysis is converted into?

A. Alpha-ketogluteric acid which forms oxaloacetic acid

B. None of these

C. Acetyl CoA which reacts with oxaloacetic acid to form citric acid

D. Lactic acid that forms CO2 and H2O

3. Enzyme bringing conversion of dihydroxy acetone phosphate into 3-phosphoglyceraldehyde is?

A. Glyceromutase

B. Triose mutase

C. Aldolase

D. Triose phosphate isomerase

4. Acetyl CoA used normally in Kreb's cycle is derived from pyruvic acid but it can also be formed from?

A. Both (a) & (b)

B. Fatty acids

C. None of them

D. Amino acids

5. The enzyme converting glucose into glucose-6-phosphate during activation stage of Glycolysis is?

A. Glucokinase

B. None of these

C. Glucoisomerase

D. Phosphoglucomutase

6. Which of these substances are initially required to start Kerb's cycle?

A. None of these

B. Oxaloacetic acid

C. Acetyl CoA

D. Both of these

7. Enzyme bringing coversion of 3-phosphoglyceric acid into 2-phosphoglyceric acid is?

A. Aldolase

B. Phosphoglyceric mutase

C. Enolase

D. None of these

8. During cellular respiration the electrons are received by which of the following substances?

A. Cytochromes

B. All of these

C. NAD

D. FAD

9. Which of these enzymes is responsible for conversion of 2-phosphoglyceric acid into phosphoenolpyruvic acid?

A. Aldolase

B. Glycerokinase

C. Glyceromutase

D. Enolase

10. At the end of cleavage stage in Glycolysis we get?

A. None of these

B. Both (a) & (b)

C. One molecule of 3-phosphoglyceraldehyde

D. One molecule of dihydroxy acetone phosphate

Respiratory System Physiology Test 07 Online Preparation

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