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Q. No.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 |
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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 |
Subtopic: Enzyme Inhibition |
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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 |
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.
Subtopic: Factors Affecting Enzyme Catalysis Reaction | Enzyme Inhibition |
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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.) |
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. |
Subtopic: Amino Acids | Proteins |
68%
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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 |
87%
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Subtopic: Carbohydrates: Cellulose, Chitin, Inulin & Agar |
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Which of the following is not a secondary metabolite?
| 1. | Curcumin | 2. | Morphine |
| 3. | Anthocyanin | 4. | Lecithin |
Subtopic: Primary & Secondary Metabolites |
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Match List - I with List - II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (A) | Terpenoides | (I) | Codeine |
| (B) | Unsaturated fatty acid | (II) | Diterpenes |
| (C) | Nucleic acid | (III) | Ricin |
| (D) | Polysaccharide | (IV) | Concanavalin A |
Choose the correct answer from the options given below:
| Options: | (A) | (B) | (C) | (D) |
| 1. | II | IV | III | I |
| 2. | II | I | IV | III |
| 3. | II | III | I | IV |
| 4. | II | IV | I | III |
Subtopic: Primary & Secondary Metabolites |
NEET - 2023
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Subtopic: Carbohydrates: Cellulose, Chitin, Inulin & Agar |
87%
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Read the following statements on lipids and find out correct set of statements:
| a. | Lecithin found in the plasma membrane is a glycolipid. |
| b. | Saturated fatty acids possess one or more c=c bonds. |
| c. | Gingely oil has lower melting point, hence remains as oil in winter. |
| d. | Lipids are generally insoluble in water but soluble in some organic solvents. |
| e. | When fatty acid is esterified with glycerol, monoglycerides are formed. |
Choose the correct answer from the options given below:
1. (a), (b) and (d) only
2. (a), (b) and (c) only
3. (a), (d) and (e) only
4. (c), (d) and (e) only
Subtopic: Lipids |
69%
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