Which element is/are found in cytochromes?
1. Fe2+ and Cu2+
2. Fe3+ and Mg2+
3. Mg2+  
4. Cu2+

Subtopic:  ETS |
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The enzyme that catalyses the conversion of glucose-6-phosphate into fructose-6-phosphate is 
1. A ligase 
2. An isomerase
3. A lyase
4. A hydrolase
 
Subtopic:  Glycolysis |
 89%
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Match column - I with column - II and select the correct option 
Column-I Column-II
(a) Cis-aconitate (i) 4C - compound
(b) \(\alpha\)-ketoglutarate (ii) 3C - compound
(c) Fumarate (iii) 6C - compound
(d) 1,3-diphosphoglyceric acid (iv) 5C - compound

1. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
2. (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
3. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
4. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
Subtopic:  Aerobic Respiration |
 81%
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Match the Column - I with Column - II considering the substrates and chemical reactions occurring in them during Krebs cycle.
Column-I Column-II
(a) Malate  (i) Decarboxylation
(b) Fumarate (ii) Dehydration
(c) Oxalo succinate (iii) Oxidation
(d) Citrate (iv) Hydration

1. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
2. (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
3. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
4. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
Subtopic:  Kreb's Cycle |
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What does A, B and C depict in the above reaction?
A B C
1. Pyruvate dehydrogenase complex \(\mathrm{CO}_2\) \(\mathrm{NADH}+\mathrm{H}^{+}\)
2. \(\mathrm{NADH}+\mathrm{H}^{+}\) Pyruvate dehydrogenase complex \(\mathrm{CO}_2\)
3. \(\mathrm{CO}_2\) \(\mathrm{NADH}+\mathrm{H}^{+}\) Pyruvate dehydrogenase complex
4. Pyruvate dehydrogenase complex \(\mathrm{NADH}+\mathrm{H}^{+}\) \(\mathrm{CO}_2\)
Subtopic:  Aerobic Respiration |
 85%
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Identify the correct combinations of A and B in given reaction
1. \(\mathrm{A}-\mathrm{NAD}^{+}\) \(\text { B - Acetyl } \cdot \text { CoA }\)
2. \(\text { A - Acetyl } \cdot \text { CoA }\) \(\mathrm{B}-\mathrm{NAD}^{+}\)
3. \(\mathrm{A}-\mathrm{NADP}^{+}\) \(\text { B - Acetyl } \cdot \text { CoA }\)
4. \(\text { A - Acetyl } \cdot \text { CoA }\) \(\mathrm{B}-\mathrm{NADP}^{+}\)
Subtopic:  Kreb's Cycle |
 83%
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Identify the correct combination of A, B and C involved in lactic acid fermentation 
\(\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6 \rightarrow \mathrm{A}+\mathrm{B} \rightarrow \text { Lactic acid }+\mathrm{C}\)
A B C
1. 2NADH + H+ 2NAD+ Pyruvic acid
2. 2NADH + H+ Pyruvic acid 2NAD+
3. Pyruvic acid 2NADH + H+ 2NAD+
4. Pyruvic acid 2NAD+ 2NADH + H+
Subtopic:  Fermentation |
 70%
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Match the respiratory substrates in column - I with their RQ value in column - II and choose the correct option
 
Column-I Column-II
(a) Fat (i) 0.9
(b) Protein (ii) 1
(c) Anaerobic respiration (iii) 0
(d) Carbohydrate (iv) Infinity

1. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
2. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
3. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
4. (a)-(ii), (b)-(iv), (c)-(ii), (d)-(i)
 
Subtopic:  Respiratory Quotient |
 87%
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Match the enzymes involved in glycolysis given in column-I with the reaction they catalyse given in column-II and choose the correct option.
Column-I Column-II
(a) Hexokinase (i) 2PEPA → 2PA
(b) Enolase (ii) 1,3 biphosphoglycerate → 3 phoshphoglycerate
(c) Pyruvate kinase (iii) Glucose → Glucose 6 phosphate
(d) Phosphoglycerokinase (iv) 2 Phosphoglycerate → 2 phosphoenolpyruvate

1. (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
2. (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
3. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
4. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
 
Subtopic:  Glycolysis |
 57%
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Match column I with column II with respect to ETS in respiration.
 
Column-I Column-II
(a) Complex I (i) Succinate dehydrogenase
(b) Complex II (ii) NADH dehydrogenase
(c) Complex III (iii) Cyt. C oxidase consisting of Cyt. a-a3
(d) Complex IV (iv) Cyt. b-C1 complex

1. (a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)
2. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
3. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
4. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
Subtopic:  Electron Transport Inhibitors |
 78%
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