Subtopic: Proteins |
71%
From NCERT
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Prosthetic groups are distinguished from other cofactors in that they are:
1. tightly bound to the apoenzyme
2. inorganic compounds
3. metal ions
4. vitamins
1. tightly bound to the apoenzyme
2. inorganic compounds
3. metal ions
4. vitamins
Subtopic: Enzyme Cofactors |
91%
From NCERT
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Consider the given two statements:
| Assertion (A): | Lipids come under acid insoluble fraction of the cell. |
| Reason (R): | Acid insoluble fraction is the macromolecular fraction and lipids are macromolecules. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) correctly explains (A) |
| 3. | Both (A) and (R) are True and but (R) does not correctly explain (A) |
| 4. | (A) is False but (R) is True |
Subtopic: Introduction |
75%
From NCERT
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Concanavalin A is:
| 1. | a primary metabolite in living organism and an alkaloid |
| 2. | a primary metabolite in living organism and a lectin |
| 3. | a secondary metabolite in living organism and a lectin |
| 4. | a secondary metabolite in living organism and an alkaloid |
Subtopic: Primary & Secondary Metabolites |
87%
From NCERT
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Polysaccharides can be cleaved into constituent monosaccharides by hydrolysis. How many water molecules will be needed to cleave a polysaccharide, containing 100 monosaccharides, completely?
| 1. | 99 | 2. | 100 |
| 3. | 101 | 4. | 51 |
Subtopic: Carbohydrates | Carbohydrates: Glycosidic Bond & Disaccharide |
77%
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Cellulose does not form blue colour with iodine because
| 1. | It breaks down when iodine reacts with it. |
| 2. | It is a disaccharide. |
| 3. | It is a helical molecule. |
| 4. | It does not contain complex helices and hence cannot hold iodine molecules. |
Subtopic: Carbohydrates: Cellulose, Chitin, Inulin & Agar |
86%
From NCERT
NEET - 2023
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Malonate inhibits the growth of pathogenic bacteria by inhibiting the activity of:
1. Dinitrogenase
2. Succinic dehydrogenase
3. Amylase
4. Lipase
1. Dinitrogenase
2. Succinic dehydrogenase
3. Amylase
4. Lipase
Subtopic: Enzyme Inhibition |
89%
From NCERT
NEET - 2023
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Given below are two statements:
In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is false but Statement II is true.
2. Both Statement I and Statement II are true.
3. Both Statement I and Statement II are false.
4. Statement I is true but Statement II is false.
| Statement I: | Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat. |
| Statement II: | When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor. |
1. Statement I is false but Statement II is true.
2. Both Statement I and Statement II are true.
3. Both Statement I and Statement II are false.
4. Statement I is true but Statement II is false.
Subtopic: Factors Affecting Enzyme Catalysis Reaction | Enzyme Inhibition |
88%
From NCERT
NEET - 2023
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Given below are two statements:
In the light of the above statements, choose the correct answer from the options given below:
| Statement I: | A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid (N-terminal). |
| Statement II: | Adult human haemoglobin, consists of 4 subunits (two subunits of \(\alpha\) type and two subunits of ẞ type.) |
| 1. | Statement I is false but Statement II is true. |
| 2. | Both Statement I and Statement II are true. |
| 3. | Both Statement I and Statement II are false. |
| 4. | Statement I is true but Statement II is false. |
Subtopic: Amino Acids | Proteins |
71%
From NCERT
NEET - 2023
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Match List - I with List - II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (A) | Protein | (I) | C=C double bonds |
| (B) | Unsaturated fatty acid | (II) | Phosphodiester bond |
| (C) | Nucleic acid | (III) | Glycosidic bonds |
| (D) | Polysaccharide | (IV) | Peptide bonds |
| Options: | (A) | (B) | (C) | (D) |
| 1. | II | I | IV | III |
| 2. | IV | III | I | II |
| 3. | IV | I | II | III |
| 4. | I | IV | III | II |
Subtopic: Nucleic Acid | Proteins | Lipids | Carbohydrates: Glycosidic Bond & Disaccharide |
88%
From NCERT
NEET - 2023
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