- 1(current)
Q. No.Consider the given two statements:
| Assertion (A): | It is important that in muscles during exercise, when oxygen is inadequate for cellular respiration pyruvic acid is reduced to lactic acid. |
| Reason (R): | NAD+ is regenerated in this step. |
| 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. | (A) is False but (R) is True. |
Subtopic: Â Fermentation |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
When deprived of oxygen, yeast cells obtain energy by fermentation, producing carbon dioxide, ATP, and
1. acetyl CoA
2. ethyl alcohol
3. lactate
4. pyruvate
1. acetyl CoA
2. ethyl alcohol
3. lactate
4. pyruvate
Subtopic: Â Fermentation |
 91%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
During strenuous muscle activity, the pyruvate in muscle cells may accept hydrogen from NADH to become ______________ .
1. acetyl CoA
2. ethyl alcohol
3. lactate
4. pyruvate
1. acetyl CoA
2. ethyl alcohol
3. lactate
4. pyruvate
Subtopic: Â Fermentation |
 91%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
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: Â Fermentation |
 89%
Level 1: 80%+
NEET - 2022
Hints
In which one of the following processes CO2 is not released?
1. Aerobic respiration in plants
2. Aerobic respiration in animals
3. Alcoholic fermentation
4. Lactate fermentation
Subtopic: Â Fermentation |
 75%
Level 2: 60%+
AIPMT - 2014
Hints
The reaction 2 in the given figure is catalysed by the enzyme:
1. Pyruvate decarboxylase
2. Pyruvate kinase
3. Pyruvate dehydrogenase
4. Pyruvate synthetase
1. Pyruvate decarboxylase2. Pyruvate kinase
3. Pyruvate dehydrogenase
4. Pyruvate synthetase
Subtopic: Â Fermentation |
 71%
Level 2: 60%+
Please attempt this question first.
Hints
During fermentation Yeasts poison themselves to death when the concentration of alcohol reaches about:
1. 5 percent
2. 13 per cent
3. 22 per cent
4. 44 per cent
1. 5 percent
2. 13 per cent
3. 22 per cent
4. 44 per cent
Subtopic: Â Fermentation |
 97%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
© 2025 GoodEd Technologies Pvt. Ltd.