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 |
Column-I | Column-II | ||
(a) | Sucrose | (i) | Malt sugar |
(b) | Lactose | (ii) | Cone sugar |
(c) | Fructose | (iii) | Milk sugar |
(d) | Maltose | (iv) | Fruit sugar |
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. |
Which one is not a D-sugar:
1. | 2. | ||
3. | 4. |
The RBC deficiency is a deficiency disease of:
1. | Vitamin B1 | 2. | Vitamin B2 |
3. | Vitamin B12 | 4. | Vitamin B6 |
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.