Q. No. The functional groups present in zwitter ion are:
1. -NH2 , -COOH
2. -NH2 , SO3H
3. Both (1) and (2)
4. None of the above
The term anomers of glucose refer to:
| 1. | Isomers of glucose that differ in configurations at carbons one and four (C-1 and C-4) |
| 2. | A mixture of (D)-glucose and (L)-glucose |
| 3. | Enantiomers of glucose |
| 4. | Isomers of glucose that differ in configuration at carbon one (C-1) |
In both DNA and RNA, heterocyclic base and phosphate ester linkages are at:
| 1. | C5' and C1' respectively of the sugar molecule. |
| 2. | C1' and C5' respectively of the sugar molecule. |
| 3. | C2' and C5' respectively of the sugar molecule. |
| 4. | C5' and C2' respectively of the sugar molecule. |
| Statement I: | Maltose is formed by C1-C4 glycosidic linkage between two αD(+) glucose units that are reducing sugar. |
| Statement II: | Maltose is formed by C1-C6 glycosidic linkage between two αD(+) glucose & βD(+) glucose. |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 1. | Both Statement I and Statement II are correct. |
| 2. | Both Statement I and Statement II are Incorrect. |
| 3. | Statement I is correct but Statement II is incorrect. |
| 4. | Statement I is incorrect but Statement II is correct. |
The secondary structure of a protein refers to:
1. α-Helical backbone
2. Hydrophobic interactions
3. Sequence of α-amino acids
4. Fixed configuration of the polypeptide backbone
| 1. | Vitamin B2 | 2. | Vitamin B1 |
| 3. | Vitamin B6 | 4. | Vitamin B12 |
| Assertion (A): | Amylose is a water-insoluble component. |
| Reason (R): | Amylose is a long linear molecule with more than 200 glucose units. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation for (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation for (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Which one of the following bases is not present in DNA?
| 1. | Adenine | 2. | Cytosine |
| 3. | Thymine | 4. | Quinoline |
Which of the glycosidic linkage between galactose and glucose is present in lactose?
1. C-1 of galactose and C-4 of glucose
2. C-1 of glucose and C-6 of galactose
3. C-1 of glucose and C-4 of galactose
4. C-1 of galactose and C-6 of glucose
Out of the following, which type of interaction is responsible for the stabilisation of -helix structure of proteins?
| 1. | Ionic bonding | 2. | Hydrogen bonding |
| 3. | Covalent bonding | 4. | Vander Waals forces |
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