Respiration In Plants

Q1. During which stage, in the complete oxidation of glucose are the greatest number of ATP molecules
formed from ADP.

1. Glycolysis.
2. Krebs cycle.
3. Conversion of pyruvic acid to acetyl Co-A.
4. Electron transport chain.

Q2. Which is the end product of glycolysis?

1. Phosphoglyceraldehyde or PGAL.
2. NADPH.
3. Pyruvic Acid.
4. Oxaloacetic acid.

Q3. R.Q is ratio of:

1. CO produced to substrate consumed.
2. CO produced to O consumed.
3. Oxygen consumed to CO produced.
4. Oxygen consumed to water produced.

Q4. Respiratory substrate yielding maximum number of ATP molecule is:

1. Ketogenic amino acids.
2. Glucose.
3. Amylose.
4. Glycogena.

Q5. Which of the following is produced by fermentation?

1. Vinegar.
2. Slice bread.
3. Idli.
4. All of the above.

Q6. Link between glycolysis, Krebs cycle and poxidation of fatty acid or carbohydrate and fat metabolism
is:

1. Oxaloacetic acid.
2. Succinic acid.
3. Citric acid.
4. Acetyl Co-A

Q7. Which of the following exhibits the highest rate of respiration?

1. Growing shoot apex.
2. Germinating seed.
3. Root tip.
4. Leaf bud.

Q8. Terminal cytochrome of respiratory chain which donates electrons to oxygen is:

1. cyt. b
2. cyt. c
3. cyt. a₁
4. cyt.-a₃

Q9. Malacophily means.

1. Pollination by wind.
2. Pollination by water.
3. Pollination by insects.
4. Pollination by snails.

Q10. TCA cycle was discovered by:

1. Otto Meyerhof.
2. Hans Kreb.
3. Gustav Embden.
4. All of these.

Q11. The final electron acceptor in electron transport chain is:

1. Cytochrome C
2. FADH
3. NADH
4. Oxygen

Q12. Connecting link between glycolysis and Krebs cycle is (before entering Krebs cycle pyruvate changed
to)

1. Oxaloacetate.
2. PEP.
3. Pyruvate.
4. Acetyl Co-A.

Q13. Which of the following processes make direct use of oxygen?

1. Electron transport.
2. Fermentation.
3. Citric acid cycle.
4. None of these.

Q14. Connecting link between glycolysis and Krebs cycle is/ before entering Krebs cycle pyruvate is changed
to:

1. Phosphoenol pyruvate.
2. Oxaloacetate.
3. Pyruvate.
4. Acetyl CoA.

Q15. Life without air would be.

1. Reductional.
2. Free from oxidative damage.
3. Impossible.
4. Anaerobic.

Q16. EMP can produce a total of:

1. 6 ATP
2. 8 ATP
3. 24 ATP
4. 38 ATP

Q17. One molecule of glucose yields _ ATP molecules in aerobic respiration.

1. 2
2. 16
3. 38
4. 42

Q18. In animal cells, the first stage of glucose break down is:

1. Krebs cycle.
2. Glycolysis.
3. Oxidative phosphorylation.
4. ETC

Q19. Oxidative phosphorylation is production of.

1. ATP in photosynthesis.
2. NADPH in photosynthesis.
3. ATP in respiration.
4. NADH in respiration.

Q20. Pyruvic acid enters TCA cycle in the form of:

1. Acetyl CoA.
2. Succinyl CoA.
3. Citirc acid.
4. Malic acid.

Q21. Final electron acceptor in oxidative phosphorylation is:

1. Oxygen.
2. Hydrogen.
3. Cytochrome.
4. None of these.

Q22. Amino acids are mostly synthesized from.

1. Mineral salts.
2. Fatty acids.
3. Volatile acids.
4. A-ketoglutaric acid.

Q23. What is the end product of glycolysis of a glucose molecule.

1. Pyruvate and ATP.
2. Phosphoglyceraldehyde.
3. Lactic acid and ATP.
4. Fructose 1, 6-diphosphate.

Q24. How much energy is produced after respiration of one molecule of glucose?

1. 576 kcal.
2. 674 kcal.
3. 768 kcal.
4. 467 kcal.

Q25. Chemiosmotic theory of ATP synthesis in the chloroplast and mitochondria is based on.

1. Membrane potential.
2. Accumulation of Na ions.
3. Accumulation of K ions.
4. Proton gradient.

Q26. Herkogamy is a contrivance for:

1. Allogamy.
2. Autogamy.
3. Chasmogamy.
4. Cleistogamy.

Q27. Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on:

1. Accumulation of Na ions.
2. Membrane potential.
3. None of these.
4. Proton gradient.

Q28. Which of the following is an important intermediate found in all the types of respiration?

1. Tricarboxylic acid.
2. Pyruvic acid.
3. Acetyl CoA.
4. Oxaloacetate.

Q29. In glycolysis, during oxidation electrons are removed by.

1. ATP.
2. Glyceraldehyde-3-phosphate.
3. NAD+
4. Molecular oxygen.

Q30. ATP is injected in cyanide poisoning because it is:

1. Necessary for cellular functions.
2. Necessary for Na -K+ pump.
3. Na -K+ pump operates at the cell membranes.
4. ATP breaks down cyanide.