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Q. No.The protein portion of an enzyme is called:
| 1. | Apoenzyme | 2. | Prosthetic group |
| 3. | Cofactor | 4. | Coenzyme |
Subtopic: Enzyme Cofactors |
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Match List-I with List-II:
Choose the option with all correct matches.
1. A-III, B-II, C-I, D-IV
2. A-II, B-III, C-I, D-IV
3. A-III, B-IV, C-II, D-I
4. A-III, B-II, C-IV, D-I
| List-I | List-II | ||
| A. | Adenosine | I. | Nitrogen base |
| B. | Adenylic acid | II. | Nucleotide |
| C. | Adenine | III. | Nucleoside |
| D. | Alanine | IV. | Amino acid |
1. A-III, B-II, C-I, D-IV
2. A-II, B-III, C-I, D-IV
3. A-III, B-IV, C-II, D-I
4. A-III, B-II, C-IV, D-I
Subtopic: Nucleic Acid | Amino Acids |
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Which one of the following enzymes contains 'Haem' as the prosthetic group?
1. Succinate dehydrogenase
2. Catalase
3. RuBisCo
4. Carbonic anhydrase
1. Succinate dehydrogenase
2. Catalase
3. RuBisCo
4. Carbonic anhydrase
Subtopic: Enzyme Cofactors |
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Name the class of enzyme that usually catalyze the following reaction :
\(\mathrm{S}-\mathrm{G}+\mathrm{S}^{\#} \rightarrow \mathrm{~S}+\mathrm{S}^{\#}-\mathrm{G}\)
Where, G → a group other than hydrogen
S → a substrate
\(S^\#\) → another substate
1. Transferase
2. Ligase
3. Hydrolase
4. Lyase
\(\mathrm{S}-\mathrm{G}+\mathrm{S}^{\#} \rightarrow \mathrm{~S}+\mathrm{S}^{\#}-\mathrm{G}\)
Where, G → a group other than hydrogen
S → a substrate
\(S^\#\) → another substate
1. Transferase
2. Ligase
3. Hydrolase
4. Lyase
Subtopic: Enzymes Classification |
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Lecithin, a small molecular weight organic compound found in living tissues, is an example of:
1. Phospholipids
2. Glycerides
3. Carbohydrates
4. Amino acids
1. Phospholipids
2. Glycerides
3. Carbohydrates
4. Amino acids
Subtopic: Lipids |
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Inhibition of Succinic dehydrogenase enzyme by malonate is a classical example of:
| 1. | Feedback inhibition |
| 2. | Competitive inhibition |
| 3. | Enzyme activation |
| 4. | Cofactor inhibition |
Subtopic: Enzyme Inhibition |
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Subtopic: Enzyme Cofactors |
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Match List I with List II:
Choose the correct answer from the options given below:
1. A-I, B-II, C-III, D-IV
2. A-II, B-III, C-IV, D-I
3. A-III, B-IV, C-I, D-II
4. A-IV, B-I, C-II, D-III
| List I | List II | ||
| A. | GLUT-4 | I. | Hormone |
| B. | Insulin | II. | Enzyme |
| C. | Trypsin | III. | Intercellular ground substance |
| D. | Collagen | IV. | Enables glucose transport into cells |
Choose the correct answer from the options given below:
1. A-I, B-II, C-III, D-IV
2. A-II, B-III, C-IV, D-I
3. A-III, B-IV, C-I, D-II
4. A-IV, B-I, C-II, D-III
Subtopic: Proteins |
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Regarding catalytic cycle of an enzyme action, select the correct sequential steps:
Choose the correct answer from the options given below:
1. A, E, B, D, C
2. B, A, C, D, E
3. E, D, C, B, A
4. E, A, D, C, B
| A. | Substrate enzyme complex formation. |
| B. | Free enzyme ready to bind with another substrate. |
| C. | Release of products. |
| D. | Chemical bonds of the substrate broken. |
| E. | Substrate binding to active site. |
1. A, E, B, D, C
2. B, A, C, D, E
3. E, D, C, B, A
4. E, A, D, C, B
Subtopic: Enzyme Catalysis | Factors Affecting Enzyme Catalysis Reaction | Mechanism of Enzymes |
74%
Level 2: 60%+
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Which of the following statement is incorrect about enzymes?
| 1. | They are highly substrate specific |
| 2. | In thermophilic organisms, enzymes can catalyze reaction at high temperatures, i.e. 90°C |
| 3. | All enzymes are proteinaceous in nature |
| 4. | Some enzymes have metal ions |
Subtopic: Enzymes |
75%
Level 2: 60%+
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