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Q. No.Which of the following is most likely to lead to the denaturation of proteins?
1. Hydrophobic interactions
2. Heat
3. Hydrogen bonding
4. Low temperature
1. Hydrophobic interactions
2. Heat
3. Hydrogen bonding
4. Low temperature
Subtopic: Proteins | Enzymes |
90%
From NCERT
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Which of the following secondary metabolites is an important anti-cancer drug?
1. Abrin
2. Concanavalin A
3. Codeine
4. Vincristine
1. Abrin
2. Concanavalin A
3. Codeine
4. Vincristine
Subtopic: Primary & Secondary Metabolites |
66%
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What is a prosthetic group in the context of proteins?
| 1. | A protein fragment that is temporarily associated with a biomolecule. |
| 2. | An inorganic ion that temporarily binds to enzymes to activate them. |
| 3. | A non-proteinaceous unit permanently attached to proteins that is essential for their function. |
| 4. | A secondary structure element that provides stability to proteins. |
Subtopic: Enzyme Cofactors |
71%
From NCERT
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What type of lipid is cholesterol?
| 1. | Triglyceride | 2. | Phospholipid |
| 3. | Unsaturated fat | 4. | Steroid |
Subtopic: Lipids |
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Match the following amino acids with their characteristics:
1. A-iii, B-i, C-ii, D-iv
2. A-iv, B-iii, C-i, D-ii
3. A-ii, B-iv, C-iii, D-i
4. A-i, B-ii, C-iv, D-iii
| Column I | Column II | ||
| A | Glycine | i | Basic |
| B | Lysine | ii | Sulfur-containing |
| C | Cysteine | iii | Non-polar |
| D | Glutamic acid | iv | Acidic |
1. A-iii, B-i, C-ii, D-iv
2. A-iv, B-iii, C-i, D-ii
3. A-ii, B-iv, C-iii, D-i
4. A-i, B-ii, C-iv, D-iii
Subtopic: Different Amino Acids |
95%
From NCERT
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Consider the given two statements:
| Assertion (A): | Phospholipids are important for cell membrane structure. |
| Reason (R): | Phospholipids provide energy for cellular processes. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Lipids: Glycerolipids, Phospholipids & Glycerol |
66%
From NCERT
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If a dsDNA molecule is composed of 26% thymine, what would be the percent composition of cytosine in this DNA molecule?
1. 26
2. 24
3. 13
4. 48
1. 26
2. 24
3. 13
4. 48
Subtopic: The DNA |
88%
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The ‘alpha helix’ describes the:
| 1. | primary structure of a protein |
| 2. | secondary structure of a protein |
| 3. | tertiary structure of a protein |
| 4. | quaternary structure of a protein |
Subtopic: Different Amino Acids |
84%
From NCERT
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Subtopic: Lipids |
75%
From NCERT
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Which statement best describes the enzyme-substrate complex?
| 1. | It increases the activation energy required for the reaction. |
| 2. | It is a temporary association that lowers the activation energy of the reaction. |
| 3. | It is formed permanently during the reaction. |
| 4. | It is formed only in catabolic reactions. |
Subtopic: Enzymes |
93%
From NCERT
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