Cellulose upon acetylation with excess acetic anhydride/H2SO4 (catalytic) gives cellulose triacetate whose structure is:
1. | |
2. | |
3. | |
4. |
The incorrect statement about carbohydrates is :
1. Maltose is a reducing sugar.
2. They are stored in the animal body as glycogen.
3. Amylopectin constitutes about 15-20% Of starch.
4. Cellulose is composed of only -D- glucose units.
The structural feature which distinguishes proline from other natural -amino acids is -
1. It is optically inactive.
2. It contains an aromatic group.
3. It is a dicarboxylic acid.
4. It is a secondary amine.
If —D—glucose is dissolved in water and kept for a few hours, the major constituent(s) present in the solution is/are:
1. | α —D—glucose. |
2. | The mixture of ß—D-glucose and open-chain D-glucose. |
3. | Open chain D-glucose. |
4. | The mixture of α —D—glucose and ß—D-glucose. |
The compound that does not reduce Benedict's solution is:
1. | Glucose | 2. | Fructose |
3. | Sucrose | 4. | Aldehyde |
1. Anomers
2. Epimers
3. Enantiomers
4. Diastereoisomers
The non-essential amino acid among the following is:
1. Lysine
2. Valine
3. Leucine
4. Alanine
Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor. M is:
1. | Sr | 2. | Be |
3. | Mg | 4. | Ca |
An optically inactive amino acid is-
1. | Lactic acid | 2. | Serine |
3. | Alanine | 4. | Glycine |
A linkage present in proteins and peptides is:
1. | 2. | ||
3. | 4. |