MCQ on Cellular Respiration Quiz Questions

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1. During cellular respiration, the carbon dioxide produced is

A absorbed B taken out C stored D consumed

2. Oxidative phosphorylation is the production of?

A NADH in respiration B ATP in respiration C NADPH in photosynthesis D ATP in photosynthesis

3. What is the end product of glycolysis?

A Fructose I – phosphate B Glucose I – phosphate C Pyruvic acid D Acetyl CoA

4. Before pyruvate enters the Krebs cycle, the connecting link between Krebs cycle and glycolysis is changed to

A PEP B Oxaloacetate C Pyruvate D Acetyl CoA

5. Reduction of NADP+ to NADPH is seen in

A Glycolysis B HMP C EMP (1988) D Calvin cycle

6. Pick the incorrect statement regarding Krebs cycle

A cycle starts with condensation of acetyl group with pyruvic acid to produce citric acid B during the conversion of succinyl Co-A to succinic acid, synthesis of a molecule of GTP occurs C at a point, reduction of FAD D the cycle has three points where reduction of NAD

7. In the cellular respiration of one molecule of glucose, _________ of energy is conserved as 38 ATP molecules

A 686 Kcal B 456 Kcal C 654 Kcal D 277 Kcal

8. Which of these yields the maximum number of ATP molecules and is the ultimate respiratory substrate

A Amylose B Glucose C Ketogenic amino acid D Glycogen

9. The CH bond of food in cellular respiration is disintegrated through

A metabolism B catalysis C oxidation D reduction

10. ___________ is the incomplete oxidation of glucose into pyruvic acid involving many intermediate steps

A Krebs cycle B HMS-pathway C Glycolysis D TCA-pathway

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