Which one is not a D-sugar:
1. | 2. | ||
3. | 4. |
1. | It results due to change of temperature and pH. |
2. | It results in the loss of biological activity of proteins. |
3. | A protein is formed from amino acids linked by peptide bonds. |
4. | Uncoiling of the helical structure takes place. |
The RBC deficiency is a deficiency disease of:
1. | Vitamin B1 | 2. | Vitamin B2 |
3. | Vitamin B12 | 4. | Vitamin B6 |
Statement I: | A unit formed by the attachment of a base to 1' position of sugar is known as a nucleoside. |
Statement II: | When nucleoside is linked to phosphorous acid at 5' position of sugar moiety we get nucleotide. |
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. |
1. | Thiamine | 2. | Nicotinamide |
3. | Pyridoxamine | 4. | Riboflavin |
Consider the following statements:
a. | Proteins are synthesized by various RNA molecules in the cell and commands for protein synthesis are present in DNA. |
b. | RNA contains β-D-ribose and DNA contains β-D-2-deoxyribose. |
c. | RNA contains uracil and DNA contains thymine. |
d. | RNA molecules are of three types, that is, messenger RNA, ribosomal RNA, and transfer RNA |
The incorrect statement(s) are :
1. a, b and d
2. a, b, c and d
3. a, b and c
4. None of the above.
Consider the following statements.
a. In fibrous protein, polypeptide chains run parallel and are held together by hydrogen and disulphide bonds.
b. Globular protein is formed when polypeptides coil around to give a spherical shape.
c. Globular proteins are insoluble in water but fibrous proteins are soluble in water.
d. Fibrous proteins and globular proteins examples are keratin and albumins respectively.
The incorrect statement is
1. d
2. c
3. b
4. a