NCERT Class 11 Chapter 14 Biology Respiration in Plants MCQ

NCERT Class 11 Chapter 14 Biology Respiration in Plants MCQ | Questions & Answers: Students who are interested to take up the online Quiz on the concept Class 11 Chapter 14 Biology Respiration in Plants can make use of this article. We have provided a series of questions that enables you to learn new things about the Class 11 Biology Respiration in Plants topic.

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1. What is the end product of glycolysis of a glucose molecule

A. Pyruvate and ATP

B. Phosphoglyceraldehyde

C. Lactic acid and ATP

D. Fructose 1, 6- diphosphate

2. Connecting link between glycolysis and Krebs cycle is/ before entering Krebs cycle pyruvate is changed to

A. acetyl CoA

B. phosphoenol pyruvate

C. oxaloacetate

D. pyruvate

3. Site of respiration in bacteria is

A. mesosome

B. episome

C. ribosome

D. microsome

4. Which of the following processes make direct use of oxygen ?

A. Electron transport

B. Fermentation

C. citric acid cycle

D. None of these

5. In Kreb’s cycle, the FAD participates as electron acceptor during the conversion of

A. succinic acid to fumaric acid

B. fumaric acid to malic acid

C. succinyl CoA to succinic acid

D. None of these

6. The major reason that glycolysis is not as energy productive as respiration is that

A. pyruvate is more reduced than CO₂; it still contains much of the energy from glucose

B. it does not take place in a specialized membrane-bound organelle.

C. it is the pathway common to fermentation and respiration

D. None of these

7. Which of the following is a 4-carbon compound?

A. Oxaloacetic acid

B. Phosphoglyceric acid

C. Citric acid

D. Phosphoenol pyruvate

8. Which of the following is a biological uncoupler of oxidative phosphorylation ?

A. Thermogenin

B. 2, 4 – Dichlorophenoxy acetic acid

C. 2, 4 – Dinitrophenol

D. Ethylene diaminotetra acetic acid

9. Which of the following is not true for oxidative phosphorylation?

A. It uses oxygen as the initial electron donor.

B. It involves the redox reactions of electron transport chain

C. t involves an ATP synthase located in the inner mitochondrial membrane.

D. It depends on chemiosmosis

10. Final electron acceptor in oxidative phosphorylation is

A. oxygen

B. hydrogen

C. cytochrome

D. None of these

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11. Quantasomes are found in

A. chloroplast

B. mitochondria

C. lysosome

D. None of these

12. Which of the following is an important intermediate found in all the types of respiration ?

A. Pyruvic acid

B. Tricarboxylic acid

C. Acetyl CoA

D. Oxaloacetate

13. Incomplete oxidation of glucose into pyruvic acid with several intermediate steps is known as

A. Glycolysis

B. Krebs cycle

C. TCA-pathway

D. HMS-pathway

14. Common enzyme in glycolysis and pentose phosphate pathways is

A. hexokinase

B. fumarase

C. aconitase

D. dehydrogenase

15. One of the following is common to glycolysis as well as Krebs cycle in eukaryotes

A. Substrate level phosphorylation

B. Photophosphorylation

C. Localization in mitochondria

D. None of these

16. A mutant cell lacking mitochondria will show

A. Inability to oxidize carbohydrates and fats

B. Inability to synthesize glucose

C. Inability to oxidize fats

D. Inability to oxidize carbohydrates

17. During the early stages of alcoholic fermentation there is a high rate of growth of yeast. After some time the rate decreases. Which of the following conditions in the culture medium is least likely to have caused this?

A. Depletion of oxygen

B. Depletion of mineral salts

C. Accumulation of waste products

D. Depletion of glucose

18. Hexose monophosphate shunt does not take place when

A. NAD is available

B. NAD is not available due to shortage of oxygen

C. Glucose is the substrate

D. Oxygen is not enough

19. Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on

A. proton gradient

B. accumulation of Na ions

C. membrane potential

D. None of these

20. The energy-releasing process in which the substrate is oxidised without an external electron acceptor is called

A. glycolysis

B. photorespiration

C. fermentation

D. aerobic respiration

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21. End product of glycolysis is

A. acetyl Co-A

B. pyruvic acid

C. glucose 1-phosphate

D. fructose 1-phosphate

22. EMP can produce a total of

A. oxaloacetate

B. PEP

C. pyruvate

D. acetyl Co-A

23. Out of 36 ATP molecules produced per glucose molecule during respiration

A. 2 are produced outside glycolysis and 34 during respiratory chain

B. 2 are produced outside mitochondria and 34 inside mitochondria

C. 2 during glycolysis and 34 during Krebs cycle

D. all are formed inside mitochondria

24. End products of aerobic respiration are

A. sugar and oxygen

B. water and energy

C. carbon dioxide, water and energy

D. carbon dioxide and energy

25. Amino acids are mostly synthesized from

A. mineral salts

B. fatty acids

C. volatile acids

D. α-ketoglutaric acid