Q. No.Which of the following is the connecting link between glycolysis and Kreb's cycle?
1. Acetyl Co-A 2. Oxalosuccinic acid 3. Pyruvic acid 4. Citric acid
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The enzyme, decarboxylase, catalyses the following step :
1. conversion of citric acid to cis aconitic acid
2. fumaric acid to malic acid
3. oxalosuccinic acid to -ketoglutaric acid
4. malic acid to oxaloacetic acid
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After glycolysis, the fate of glucose in the mitochondrial matrix is
| 1. | oxidation | 2. | reduction |
| 3. | oxidative decarboxylation | 4. | hydrolysis |
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Which one is the correct sequence occurring in glycolysis?
1. G-6-P →PEP →3-PGAL →3-PGA
2. G-6-P →3-PGAL → 3-PGA →PEP
3. G-6-P →PEP →3-PGA →3-PGAL
4. G-6-P →3-PGA →3-PGAL →PEP
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The dough kept overnight in warm weather becomes soft and spongy because of
1. Fermentation
2. Cohesion
3. Osmosis
4. Absorption of carbon dioxide from the atmosphere
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During which stage in the complete oxidation of glucose, is the greatest number of ATP molecules formed from ADP?
1. Glycolysis
2. Krebs cycle
3. Electron transport
4. Conversion of pyruvic acid to acetyl CoA
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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.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
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.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Assertion: NAD+ is the most versatile electron acceptor in cellular respiration and functions in several of redox steps during the breakdown of glucose.
Reason: As an electron acceptor, NAD+ functions as an oxidizing agent during respiration.
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.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
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.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
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