Q. No.D(+) glucose yields an oxime with hydroxyl amine. The structure of the oxime would be:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
1. Phosphate linkages
2. H-bonding
3. Glycosidic linkages
4. Peptide linkages
| 1. | D is the acidic amino acid - glutamic acid |
| 2. | C is an aromatic amino acid - tryptophan |
| 3. | A is the C-terminal amino acid and D is N terminal amino acid |
| 4. | A is the sulphur containing amino acid-methionine |
The disease caused by deficiency of vitamin B1 is:
| 1. | Convulsions | 2. | Beri-beri |
| 3. | Cheilosis | 4. | Sterility |
Sucrose can be formed by:
1. α–D–galactopyranose and α–D–glucopyranose
2. α–D–glucopyranose and β–D–fructofuranose
3. β–D–galactopyranose and α–D–fructofuranose
4. α–D–galactopyranose and β–D–fructopyranose
Which one of the following statements is not true regarding (+) lactose?
| 1. | (+) lactose is a β -glycoside and a molecule of D(+) galactose |
| 2. | (+) lactose is a reducing sugar and does not exhibit mutarotation |
| 3. | (+) lactose, C 12 H 22 O 11 contains 8-0 H groups |
| 4. | On hydrolysis (+) lactose gives equal amount of D(+) glucose and D(+) galactose |
Which of the following is not a fat-soluble vitamin?
1. Vitamin A
2. Vitamin B complex
3. Vitamin D
4. Vitamin E
The correct statements regarding "Denaturation" are:
| (a) | Denaturation of proteins causes the loss of secondary and tertiary structures of the protein. |
| (b) | Denaturation leads to the conversion of a double strand of DNA into a single strand. |
| (c) | Denaturation affects the primary structure which gets distorted. |
1. (a), (b) and (c)
2. (b) and (c)
3. (a) and (c)
4. (a) and (b)
Which one of the following does not exhibit the phenomenon of mutarotation?
1. (+) Sucrose
2. (+) Lactose
3. (+) Maltose=
4. (-) Fructose
Fructose reduces Tollen's reagent due to:
| 1. | Primary alcoholic group |
| 2. | Secondary alcoholic group |
| 3. | Enolisation of fructose followed by conversion to aldehyde by base |
| 4. | Asymmetric carbon |
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