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Q. No.Which of the following would be correct regarding the comparison of fermentation and aerobic respiration?
Fermentation
Aerobic respiration
I.
Partial breakdown of glucose
Complete breakdown of glucose
II.
Net gain of only two molecules of ATP beginning with one molecule of glucose
Net gain of many more molecules of ATP beginning with one molecule of glucose
III.
NADH is oxidised to NAD+ slowly
NADH is oxidised to NAD+ vigorously
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
Subtopic: Fermentation | Aerobic Respiration |
67%
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Consider the two statements:
| Statement I: | The respiratory pathway is better regarded as an amphibolic pathway rather than only a catabolic pathway. |
| Statement II: | The respiratory pathway is involved in both anabolism and catabolism. |
| 1. | Both Statement I and Statement II are correct and Statement II explains Statement I |
| 2. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
| 3. | Statement I is correct but Statement II is incorrect |
| 4. | Statement I is incorrect but Statement II is correct |
Subtopic: Amphibolic Nature of Respiration |
91%
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Consider the following statements:
1. Only II is incorrect
2. Only III is incorrect
3. Both I and III are incorrect
4. I, II and III are correct
| I: | If fatty acids were to be respired, they would enter the respiratory pathway as acetyl CoA. |
| II: | Glycerol enters the respiratory pathway after being converted to PGAL. |
| III: | Amino acids enter the respiratory pathway at some stage within the Krebs cycle but never as pyruvate or acetyl CoA. |
2. Only III is incorrect
3. Both I and III are incorrect
4. I, II and III are correct
Subtopic: Amphibolic Nature of Respiration |
74%
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The following equation shows the complete oxidation of tripalmitin [a fatty acid] during cellular respiration. Calculate the RQ:
\(2(C_{51}H_{98}O_6)+145O_2\longrightarrow \\102CO_2+98H_2O+\text{energy}\)
\(2(C_{51}H_{98}O_6)+145O_2\longrightarrow \\102CO_2+98H_2O+\text{energy}\)
| 1. | 0.7 | 2. | 0.9 |
| 3. | 1.0 | 4. | 4.0 |
Subtopic: Respiratory Quotient |
90%
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When proteins are respiratory substrates, the respiratory quotient is about:
| 1. | 0.7 | 2. | 0.9 |
| 3. | 1.0 | 4. | 4.0 |
Subtopic: Respiratory Quotient |
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What will be true for the metabolic reaction shown in the given figure?
I. It shows hydrolysis of sucrose, a disaccharide, into two monosaccharides, a glucose and a fructose molecule.
II. The enzyme that is capable of catalysing this reaction is invertase.
I. It shows hydrolysis of sucrose, a disaccharide, into two monosaccharides, a glucose and a fructose molecule.
II. The enzyme that is capable of catalysing this reaction is invertase.
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Glycolysis |
90%
Given below is the schematic representation of alcohol fermentation. Study the diagram and select the correct statements that follow:
I: Yeasts perform this metabolic conversion when growing in the absence of oxygen.
II: The metabolic conversion of pyruvate into acetaldeyhde is catalysed by the enzyme pyruvate dehydrogenase.
III: The metabolic conversion of acetaldehyde into ethanol is catalysed by the enzyme alcohol dehydrogenase.
I: Yeasts perform this metabolic conversion when growing in the absence of oxygen.
II: The metabolic conversion of pyruvate into acetaldeyhde is catalysed by the enzyme pyruvate dehydrogenase.
III: The metabolic conversion of acetaldehyde into ethanol is catalysed by the enzyme alcohol dehydrogenase.
| 1. I and II | 2. I and III |
| 3. II and III | 4. I, II and III |
Subtopic: Fermentation |
52%
Given below is the schematic representation of the reactions in Krebs' Citric Acid Cycle. Identify the correct statements:
I: Oxidative decarboxylation steps are Step 4 and Step 5.
II. The reducing power 'NADH' is generated at Step 4, Step 5 and Step 9.
III. FADH2 is generated at Step 7.
I: Oxidative decarboxylation steps are Step 4 and Step 5.
II. The reducing power 'NADH' is generated at Step 4, Step 5 and Step 9.
III. FADH2 is generated at Step 7.
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Subtopic: Kreb's Cycle |
74%
Given below is the schematic representation of the electron transport chain in mitochondria. Identify the correct statement:
1. (1) is NADH; 4 is FAD; 6 is fumarate; 8 is oxygen and 10 is ATP
2. (2) is NAD+ ; 4 is FADH2; 6 is succinate; 8 is oxygen and 10 is ADP
3. (1) is NADH; 4 is Fumarate; 6 is FAD; 8 is water and 10 is ATP
4. (2) is NAD+; 3 is succinate; 6 is FAD; 8 is oxygen and 10 is ADP
1. (1) is NADH; 4 is FAD; 6 is fumarate; 8 is oxygen and 10 is ATP
2. (2) is NAD+ ; 4 is FADH2; 6 is succinate; 8 is oxygen and 10 is ADP
3. (1) is NADH; 4 is Fumarate; 6 is FAD; 8 is water and 10 is ATP
4. (2) is NAD+; 3 is succinate; 6 is FAD; 8 is oxygen and 10 is ADP
Subtopic: ETS |
54%
The given diagram shows an important component of the mitochondrial electron transport chain. Identify A, B and C:
| A | B | C | |
| 1. | Complex I | FMN | Fe-S |
| 2. | Complex I | Fe-S | FMN |
| 3. | Complex II | FMN | Fe-S |
| 4. | Complex II | Fe-S | FMN |
Subtopic: ETS |
64%
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