Based on the information given in Section 14.3 of your NCERT textbook, can you identify the chemical reaction catalyzed by the enzyme alcohol dehydrogenase?
1.C12H22O11+H2O2C6H12O6
2.CH3COCOO-+H+CH3CHO+CO2
3. CH3CHO+NADH+H+C2H5OH+NAD+
4. None of these

Subtopic:  Fermentation |
 69%
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Assertion: Catabolism in living organisms is linked to work by a chemical drive shaft – the ATP.
Reason: Exergonic catabolic pathways release energy that can directly be used for physiological functions.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason 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:  Introduction |
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Assertion: In general, organic molecules that have an abundance of hydrogen are excellent energy fuels for living organisms.
Reason: Bonds in such organic molecules are source of high energy electrons.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason 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 |
 73%
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Assertion: The reaction in glycolysis, catalyzed by the enzyme phosphofructokinase, is a key regulatory point and also a rate limiting step.
Reason: The reaction is essentially irreversible.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason 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 | Glycolysis Regulation |
 51%
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Assertion: Arsenate is the uncoupler of glycolysis.
Reason: Arsenate is an inhibitor of phosphoglycerate mutase.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason 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 |
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Consider the steps of glycolysis given in the diagram:  

What is true about reaction 1?
I. Hexokinase is a transferase
II. It acts to keep the glucose concentration low
III. It blocks the glucose from leaking out
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III

Subtopic:  Glycolysis |
 51%
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Consider the steps of glycolysis given in the diagram:

It is advantageous that in reaction 5 DHAP is isomerized to G3P because:
1. G3P has more energy than DHAP
2. DHAP is highly toxic
3. Regulation of the pathway becomes easy
4. DHAP is unstable and breaks down to Acetyl CoA

Subtopic:  Glycolysis |
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Consider the latter half of glycolytic pathway given below:

Regarding reaction 7:
I. Glycolysis has reached the break-even point.
II. When the cell has plenty of ATP (and little ADP), this reaction does not occur.
1. Only I is true
2. Only II is true
3. Both I and II are true
4. Both I and II are false

Subtopic:  Glycolysis |
 55%
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When the amount of ATP is increased in a cell, it is expected to:
1. inhibit the enzyme phosphofructokinase.
2. activate the enzyme citrate synthase.
3. inhibit the enzyme pyruvate kinase.
4. activate the enzyme pyruvate dehydrogenase.

Subtopic:  Glycolysis |
 61%
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Assertion: Homolactic fermentation (producing only lactic acid) is the simplest type of fermentation.
Reason: It is one of the only respiration processes to not produce a gas as a byproduct.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason 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:  Fermentation |
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