Respiration In Plants — DPP 3

20 NEET questions from Respiration In Plants, with answers and explanations. Attempt it as a timed test to get scoring, accuracy breakdown and mistake tracking.

Attempt this test free 20 questions · 30 minutes · +80 marks
1
At how many steps substrate level phosphorylation occurs during glycolysis?
  1. A One
  2. B Two
  3. C Three
  4. D Four
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Correct answer: B

2
Anaerobic respiration takes place in :-
  1. A Ribosome
  2. B Mitochondria
  3. C Cytoplasm
  4. D Vacuole
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Correct answer: C

3
Statement-I : ATP act as energy currency of cell
Statement-II : Energy released through respiration is trapped as bio-chemical energy in the from of ATP.
  1. A Both Statement-I and Statement-II are incorrect.
  2. B Statement-I is correct but statement-II is incorrect.
  3. C Statement-I is incorrect but Statement-II is correct.
  4. D Both Statement-I and Statement-II are correct.
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Correct answer: D

4
How many ATP molecules and during which steps, are directly synthesised in EMP pathway from one glucose molecule?
  1. A 4 ATP, 2 in each PEP to pyruvic acid and BPGA to PGA
  2. B 8 ATP, 4 in each PEP to pyruvic acid and BPGA to PGA
  3. C 2 ATP, 1 in each Glucose to Glucose-6-P and Fructose-6-P to Fructose 1, 6 bisphosphate
  4. D 4 ATP, 2 in each Glucose to Glucose-6-P and Fructose-6-P to Fructose 1, 6 bisphosphate
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Correct answer: A

5
Read the following statements with respect to Krebs cycle and select the correct option:
(a) First stable product is 3C compound.
(b) At three steps NAD${ }^{+}$is reduced.
(c) GTP is produced when succinyl $\operatorname{CoA}$ is converted to succinic acid.
(d) Citric acid is the first stable product.
  1. A a, b & c are correct
  2. B b, c & d are correct
  3. C Only a is correct
  4. D a, b & d are correct
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Correct answer: B

6
What is RQ if carbohydrates are used as a respiratory substrate?
  1. A 1
  2. B 0.8
  3. C 0.7
  4. D 0.9
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Correct answer: A

7
Which of the following ETC complex is directly involved in reduction of oxygen ?
  1. A Complex-I
  2. B Complex-II
  3. C Complex-III
  4. D Complex-IV
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Correct answer: D

8
Which of the following is not an intermediate of Krebs cycle ?
  1. A OAA
  2. B $\alpha$-ketoglutarate
  3. C Malate
  4. D PGAL
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Correct answer: D

9
One molecule of glucose is converted into how many molecules of pyruvic acid?
  1. A 1
  2. B 2
  3. C 3
  4. D 4
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Correct answer: B

10
ETS is inhibited at complex-IV by :-
  1. A Cyanide
  2. B Rotenone
  3. C Antimycin
  4. D Oligomycin
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Correct answer: A

11
Select out the correct sequence of glycolytic steps:
  1. A PGAL → 3-PGA → 1,3-BPGA → PEP
  2. B PGAL → 1,3-BPGA → PEP → 3-PGA
  3. C PGAL → 1,3-BPGA → 3-PGA → PEP
  4. D PGAL → PEP → 1,3-BPGA → 2-PGA
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Correct answer: C

12
Assertion: The respiratory pathway comes into the picture both during breakdown and synthesis of fatty acids.
Reason : fatty acids would be broken down to acetyl CoA before entering the respiratory pathway. But when the organism needs to synthesise fatty acids, acetyl CoA would be withdrawn from the respiratory pathway.
  1. A Both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
  2. B Both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
  3. C Assertion is True but the Reason is False.
  4. D Both Assertion & Reason are False.
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Correct answer: A

13
Aerobic respiratory pathway is appropriately termed: -
  1. A Parabolic
  2. B Amphibolic
  3. C Anabolic
  4. D Catabolic
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Correct answer: B

14
Glycolysis is present in :-
  1. A Plants and animals only.
  2. B Plants, animals and fungionly.
  3. C Animals only.
  4. D All living organisms.
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Correct answer: D

15
After entry of pyruvic acid in mitochondrial matrix, which of the following does not take place?
  1. A Oxidation
  2. B Decarboxylation
  3. C Oxidative - decarboxylation
  4. D ATP mediated phosphorylation
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Correct answer: D

16
In the balance sheet of fermentation, net gain is :-
  1. A 12 ATP molecules
  2. B 38 ATP molecules
  3. C 2 ATP molecules
  4. D 8 ATP molecules
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Correct answer: C

17
When the evolution of $\mathrm{CO}_{2}$ is more than the intake of $\mathrm{O}_{2}$, the respired substrate should be:
  1. A Fatty acid
  2. B organic acid
  3. C Glucose
  4. D Polysaccharides
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Correct answer: B

18
How many ATP are produced from one molecule of Acetyl CoA ?
  1. A 12 ATP
  2. B 10 ATP
  3. C 5 ATP
  4. D 14 ATP
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Correct answer: A

19
Statement-I : Fermentation accounts for only a partial breakdown of glucose whereas in aerobic respiration it is completely breakdown to $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$.
Statement-II : In fermentation there is a net gain of only two molecules of ATP for each molecules glucose breakdown to alcohol and $\mathrm{CO}_{2}$.
  1. A Statement I and II both are correct
  2. B Statement I and II both are incorrect
  3. C Only Statement I is correct
  4. D Only Statement II is correct
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Correct answer: A

20
In glycolysis there is no :-
  1. A Oxidation
  2. B Decarboxylation
  3. C Dehydrogenation
  4. D Splitting of C-C bonds
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Correct answer: B

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