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Fermentation is not a waste but it serves an important purpose which is:
1. Regeneration of NAD +
2. Formation of large number of ATP
3. Evolution of oxygen
4. Complete oxidation of pyruvic acid

Subtopic:  Fermentation |
 85%
Level 1: 80%+
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What amount of energy is released from glucose during lactic acid fermentation?
1. Less than 7% 2. Approximately 15%
3. More than 18% 4. About 10%
Subtopic:  Fermentation |
 89%
Level 1: 80%+
NEET - 2022
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What is the net gain of ATP when each molecule of glucose is converted to two molecules of pyruvic acid?
1. Eight 2. Four
3. Six 4. Two
Subtopic:  Glycolysis |
 69%
Level 2: 60%+
NEET - 2022
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Match List-I with List-II

List-I List-II
(a) ETS complex-I (i) Cyt bc1
(b) ETS complex-II (ii) Cyt a,a3 and 2 copper centres 
(c) ETS complex-III (iii) NADH dehydrogenase
(d) ETS complex-IV (iv) Ubiquinone and FADH2  dehydrogenase

Choose the correct answer from the options given below:

(a) (b) (c) (d)
1. (ii) (i) (iv) (iii)
2. (iv) (iii) (ii) (i)
3. (iii) (ii) (i) (iv)
4. (iii) (iv) (i) (ii)
Subtopic:  ETS |
 85%
Level 1: 80%+
NEET - 2022
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Identify the cytochrome which acts as a mobile carrier for the transfer of electrons between complex III and IV?

1. Cytochrome a  2. Cytochrome a3 
3. Cytochrome b c1  4. Cytochrome c
Subtopic:  ETS |
 79%
Level 2: 60%+
NEET - 2022
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Substrate-level phosphorylation accounts for approximately what percentage of the ATP formed by the reactions of glycolysis?
1. 0%
2. 2%
3. 10% 
4. 100%
Subtopic:  Glycolysis | Glycolysis Regulation |
 75%
Level 2: 60%+
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Assertion(A): In aerobic respiration presence of O2 is necessary.
Reason(R): O2 in aerobic respiration plays only one role i.e. terminal acceptor of the electron.
In the following questions, a statement of assertion (A) is followed by a statement of the reason (R).
1. Both (A) & (R) are true and (R) is the correct explanation of (A)
2. Both (A) & (R) are true but (R) is not the correct explanation of (A).
3. (A) is a true statement but (R) is false.
4. Both (A) and (R) are false statements.
Subtopic:  Aerobic Respiration | ETS:2 | ETS:1 |
 72%
Level 2: 60%+
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The oxygen consumed during cellular respiration is involved directly in which process or event?
1. glycolysis
2. accepting electrons at the end of the electron transport chain
3. the citric acid cycle
4. the oxidation of pyruvate to acetyl CoA
 
Subtopic:  ETS:1 |
 88%
Level 1: 80%+
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Given below are two statements: 
Assertion (A): Glycolysis occurs in cytoplasm.
Reason (R): Enzymes of glycolysis are found in cytoplasm. It is common in aerobic/anaerobic respiration.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Glycolysis |
 82%
Level 1: 80%+
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During glycolysis, when each molecule of glucose is catabolized to two molecules of pyruvate, most of the potential energy contained in glucose is
1. transferred to ADP, forming ATP
2. transferred directly to ATP
3. retained in the two pyruvates 
4. stored in the NADH produced

 
Subtopic:  Glycolysis |
 63%
Level 2: 60%+
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