A : Yeast in involved in alcoholic fermentation.

 R : Yeast poison themselves to death when concentration of alcohol reaches about 13%.

In the follewing questions, a statement of assertion (A) is followed by a statement of reason (R)

1. If both Assertion & reason are true and the reason in the correct explanation of the assertion, then mark (1).

2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).

3.  If Assertion is ture statement but Reason is false, then mark (3).

4.  If both Assertion and reason are false statments, then mark (4).

Subtopic:  Fermentation |
 76%
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Match the following and select the correct option from these given below:

Column I Column II
(a) NADH dehydrogenase (i) Complex - V
(b) Cytochrome bc1 complex (ii) Complex - lll
(c) ATP synthetase (iii) Complex - lV
(d) Cytochrome c oxidase (iv) Complex - l
 
(a) (b) (c) (d)
1. (iv) (ii) (i) (iii)
2. (iv) (ii) (iii) (i)
3. (iv) (iii) (i) (ii)
4. (iv) (iii) (ii) (i)
Subtopic:  ETS |
 77%
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Consider the following statements about fermentation 

a. Yeast produces CO2 and ethanol by incomplete oxidation of glucose.

b. Some bacteria produce lactic acid from pyruvic acid.

c. In both lactic acid and alcohol fermentation, a lot of energy is released.

d. H2O is not released.

The correct statements are 

1. Only a & d 

2. a, b & d 

3. b & d 

4. a, c & d

Subtopic:  Fermentation |
 80%
From NCERT
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Consider the statements a, b, c and d  with respect to fermentation by yeast and select the correct choice

a. Production of CO2 and ethanol

b. Complete oxidation of glucose 

c. The reducing agent is NADH + H+

d. It is achieved under anaerobic condition 

1. a & b are incorrect

2. b is incorrect

3. a & c is incorrect

4. all are incorrect 

Subtopic:  Fermentation |
 87%
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In the figure given below the correct match is: 

1. A-Ethanol, B-Lactic acid, C-Dihydroxyacetone phosphate

2. A-Lactic acid, B-Ethanol, C-Oxaloacetic acid

3. A-Lactic acid, B-Ethanol, C-3-Phosphoglyceric acid

4. A-Ethanol, B-Lactic acid, C-3-phosphoglyceric acid

Subtopic:  Fermentation |
 84%
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How many statements are correct with respect to ETS?

1. ETS is helpful in the restoration of NAD+ & FAD+

2. O2 is terminal e acceptor in electron transport system

3. Ubiquinone & FMN are hydrogen carriers and helpful in the movement of H+ from matrix to space.

4. Complex lV is also known as cytochrome C oxidase.

5. Movement of e in ETS  is due to variable valency of metal ions present in carrier complexes.

1. 3

2. 4

3. 5

4. 2

Subtopic:  ETS |
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Match the following columns.

Column I

Column II

A. Molecular oxygen

B. Electron acceptor

C. Pyruvate dehydrogenase

D. Decarboxylation

1. α- ketoglutaric acid (1)

2. Hydrogen acceptor(A)

3.  Cytochrome-c (B)

4. Acetyl Co - A(C)

Codes 

Options:  A   B   C   D 
1. 2 3 4 1
2. 3 4 2 1
3. 2 1 3 4
4. 4 3 1 2

Subtopic:  Aerobic Respiration | Oxidative Phosphorylation |
 85%
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A: In aerobic respiration presence of O2 is necessary.
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. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. If Assertion is a true statement but the Reason is false.
4. If both Assertion and Reason are false statements.
Subtopic:  Aerobic Respiration | ETS:2 | ETS:1 |
 71%
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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 |
 81%
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A: Glycolysis is the first common step of both aerobic as well as anaerobic respiration.
R:  1 molecule of hexose sugar is converted into molecules of pyruvic acid in the absence or presence of oxygen in glycolysis.
In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).
3. If Assertion is a true statement but the Reason is false, then mark (3).
4. If both Assertion and Reason are false statements, then mark (4).
Subtopic:  Glycolysis |
 66%
From NCERT
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