Respiration In Plants — DPP 2

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
Pyruvate enters to the mitochondrial matrix and undergoes.
  1. A Reductive decarboxylation
  2. B Oxidative carboxylation
  3. C Reductive carboxylation
  4. D Oxidative decarboxylation
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Correct answer: D

2
Respiration occurs in :-
  1. A All living cells both in day and night
  2. B Non green cells only in day
  3. C Non green cells in both day and night
  4. D All living cells in day only
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Correct answer: A

3
What causes R.Q. to vary ?
  1. A Respiratory Substrate
  2. B Light & $\mathrm{O}_{2}$
  3. C Respiratory Product
  4. D Temperature
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Correct answer: A

4
During the formation of bread, it becomes porous due to release of $\mathrm{CO}_{2}$ by the action of:-
  1. A Yeast
  2. B Bacteria
  3. C Virus
  4. D Protozoans
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Correct answer: A

5
Among the 12 molecules of $\mathrm{H}_{2} \mathrm{O}$ produced through ETS in respiration during oxidation of 1 glucose molecule, how many can be produced due to EMP pathway?
  1. A 2
  2. B 6
  3. C 4
  4. D 12
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Correct answer: A

6
Which among the following is wrong?
(i) Glycolysis occurs in all living organism.
(ii) TCA cycle and ETS only occurs in aerobes
(iii) Complete oxidation of pyruvate occurs by removal of all hydrogen atom in TCA cycle.
  1. A (i)
  2. B (ii)
  3. C (iii)
  4. D None of the above
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Correct answer: D

7
Product formed by the activity of malic dehydrogenase is :-
  1. A Fumaric acid
  2. B Malic acid
  3. C Oxaloacetic acid
  4. D Succinic acid
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Correct answer: C

8
Select the correct match for one glucose molecule:-
  1. A EMP pathway - 12 ATP
  2. B Link reaction - 8 ATP
  3. C Krebs cycle - 24 ATP
  4. D Anaerobic respiration - 6 ATP
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Correct answer: C

9
Statement-I : Cytochrome c is a small protein remain attached to outer surface of inner mitochondrial membrane.
Statement-II : Cytochrome c is a mobile $\mathrm{e}^{-}$ carrier between complex-III and IV.
  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

10
Respiration may take place -
  1. A In the presence of $\mathrm{O}_{2}$
  2. B In the absence of $\mathrm{O}_{2}$
  3. C In the presence or absence of $\mathrm{O}_{2}$
  4. D Only in the presence of $\mathrm{CO}_{2}$
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Correct answer: C

11
In TCA cycle, isomerisation of citrate is followed by how many decarboxylation(s) to form succinic acid?
  1. A Two
  2. B Three
  3. C One
  4. D Four
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Correct answer: A

12
In ETS, $\mathrm{O}_{2}$ accept the electrons and get reduced to which of the following?
  1. A Water
  2. B Carbon dioxide
  3. C Palmitic acid
  4. D None of the above
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Correct answer: A

13
What is the final end product of TCA cycles?
  1. A $3 \mathrm{NADH}+\mathrm{H}^{+}$
  2. B 1 ATP
  3. C $1 \mathrm{FADH}_{2}$
  4. D All of the above
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Correct answer: D

14
In some biochemical reactions, two redox equivalents in the form of hydrogen atoms comes out from PGAL and transferred to $\mathrm{NAD}^{+}$, site of this process is :-
  1. A Stroma of chloroplast
  2. B Cytoplasm
  3. C Mitochondrial matrix
  4. D Outer membrane of mitochondria
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Correct answer: B

15
How many molecules of $\mathrm{CO}_{2}$ are released in Krebs cycle per glucose molecule?
  1. A Two
  2. B Three
  3. C Four
  4. D Six
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Correct answer: C

16
Respiration In Plants – NEET-2507
Choose the correct combination :-
  1. A $\mathrm{A}=$ Lactic acid, $\mathrm{B}=\mathrm{CO}_{2}, \mathrm{C}=\mathrm{NAD}$
  2. B $\mathrm{A}=$ Ethanol, $\mathrm{B}=\mathrm{H}_{2} \mathrm{O}, \mathrm{C}=\mathrm{NAD}$
  3. C $\mathrm{A}=$ Ethanol, $\mathrm{B}=\mathrm{CO}_{2}, \mathrm{C}=\mathrm{NAD}$
  4. D $\mathrm{A}=$ Acetyl CoA, $\mathrm{B}=\mathrm{CO}_{2}, \mathrm{C}=\mathrm{NAD}$
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Correct answer: C

17
Respiration in plants :-
  1. A Occurs only during day
  2. B Results in the formation of vitamins
  3. C Occurs both during day and night
  4. D Often requires $\mathrm{CO}_{2}$
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Correct answer: C

18
The common phase between aerobic & anaerobic respiration is :-
  1. A TCA cycle
  2. B Kreb's cycle
  3. C Glycolysis
  4. D Photo respiration
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Correct answer: C

19
Which of the following complexes of mitochondrial ETS contains two copper centres?
  1. A Cytochrome C oxidase
  2. B Succinate dehydrogenase
  3. C NADH dehydrogenase
  4. D Cytochrome $\mathrm{bc}_{1}$
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Correct answer: A

20
Select correct option with respect to number of carbon present in respiratory intermediate:
  1. A
  2. B
  3. C
  4. D
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Correct answer: C

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