- 1(current)
Q. No.The protein portion of an enzyme is called:
| 1. | Apoenzyme | 2. | Prosthetic group |
| 3. | Cofactor | 4. | Coenzyme |
Subtopic: Â Enzyme Cofactors |
 69%
Level 2: 60%+
NEET - 2025
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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: Â Enzyme Cofactors |
Level 3: 35%-60%
NEET - 2025
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Subtopic: Â Enzyme Cofactors |
 67%
Level 2: 60%+
NEET - 2024
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Match List-I with List-II:
Choose the correct answer from the options given below :
| List-I | List-II | ||
| A. | Ribozyme | I. | Glucose transport |
| B. | Lecithin | II. | Non-proteinaceous enzyme |
| C. | Glut-4 | III. | Lipid |
| D. | Vitamins | IV. | Coenzyme |
| 1. | A-IV, B-III, C-I, D-II | 2. | A-IV, B-III, C-II, D-I |
| 3. | A-II, B-I, C-III, D-IV | 4. | A-II, B-III, C-I, D-IV |
Subtopic: Â Proteins |Â Lipids |Â Enzymes |Â Enzyme Cofactors |
 72%
Level 2: 60%+
NEET - 2024
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In the enzyme which catalyses the breakdown of:
\(\mathrm{H}_2 \mathrm{O}_2 \rightarrow \mathrm{H}_2 \mathrm{O}+\mathrm{O}_2\)
the prosthetic group is:
\(\mathrm{H}_2 \mathrm{O}_2 \rightarrow \mathrm{H}_2 \mathrm{O}+\mathrm{O}_2\)
the prosthetic group is:
| 1. | Nicotinamide adenine dinucleotide | 2. | Haem |
| 3. | Zinc | 4. | Niacin |
Subtopic: Â Enzyme Cofactors |
 69%
Level 2: 60%+
NEET - 2022
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Consider the following statements:
| A: | A coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group |
| B: | A complete catalytic enzyme with its bound prosthetic group is called apoenzyme |
Select the correct option
1. (A) is false but (B) is true
2. Both (A) and (B) are true
3. (A) is true but (B) is false
4. Both (A) and (B) are false
Subtopic: Â Enzyme Cofactors |
Level 3: 35%-60%
NEET - 2019
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Prosthetic groups differ from co-enzymes, in which:
| 1. | they require metal ions for their activity. |
| 2. | they (prosthetic groups) are tightly bound to apoenzymes. |
| 3. | their association with apoenzymes is transient. |
| 4. | they can serve as co-factors in a number of enzyme-catalyzed reactions. |
Subtopic: Â Enzyme Cofactors |
 82%
Level 1: 80%+
NEET - 2019
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The essential chemical components of many coenzymes are:
| 1. | Nucleic acid | 2. | Carbohydrates |
| 3. | Vitamins | 4. | Proteins |
Subtopic: Â Enzyme Cofactors |
 71%
Level 2: 60%+
AIPMT - 2013
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An organic substance bound to an enzyme and essential for its activity is called:
| 1. | coenzyme | 2. | holoenzyme |
| 3. | apoenzyme | 4. | isoemzyme |
Subtopic: Â Enzyme Cofactors |
 68%
Level 2: 60%+
AIPMT - 2006
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- 1(current)
Q. No.
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