Inulin is a:
1. | Disaccharide containing two galactose |
2. | Disaccharide containing fructose and galactose |
3. | Polymer of fructose |
4. | Polysaccharide used in microbial culture |
Sugars are technically called carbohydrates, referring to the fact that their formulae are only multiples of C(H2O). Hexose therefore has six carbons, twelve hydrogen and six oxygen atoms. Glucose is a hexose. Choose from among the following another hexose.
1. | Fructose | 2. | Erythrose |
3. | Ribulose | 4. | Ribose |
A | B | C | D | |
1. | Reducing end | Non reducing end | α [1→4] linkage | α [1→6] linkage |
2. | Non reducing end | Reducing end | α [1→4] linkage | α [1→6] linkage |
3. | Reducing end | Non reducing end | α [1→6] linkage | α [1→4] linkage |
4. | Non reducing end | Reducing end | α [1→6] linkage | α [1→4] linkage |
Statement I: | Iodine test can detect the presence of starch but not of cellulose in a given sample. |
Statement II: | Starch forms helical secondary structure and can hold iodine molecules while cellulose does not contain complex helices and hence cannot hold iodine. |
1. | Both Statement I and Statement II are correct and Statement II correctly explains Statement I |
2. | Both Statement I and Statement II are correct but Statement II does not correctly explain Statement I |
3. | Statement I is correct but Statement II is incorrect |
4. | Statement I is incorrect but Statement II is correct |
Formation of glycosidic bond represents:
1. Dehydration | 2. Hydrolysis |
3. Dehydrogenation | 4. Isomerization |
Cellulose, the most important constituent of plant cell wall, is made of
1. | Unbranched chain of glucose molecules linked by α 1, 4 glycosidic bond |
2. | Branched chain of glucose molecules linked by β 1, 4 glycosidic bond in straight chain and β 1, 6 glycosidic bond at the site of branching |
3. | Unbranched chain of glucose molecules linked by β 1, 4 glycosidic bond |
4. | Branched chain of glucose molecules linked by α 1, 6 glycosidic bond at the site of branching |