Which of the following is a basic amino acid?

1. Alanine

2. Tyrosine

3. Lysine

4. Serine 

Scurvy is caused due to the deficiency of vitamin:-

Products of hydrolysis of lactose are :

1. β-D-Galactose and β-D-Glucose.

2. $\mathrm{\alpha }$-D-Galactose and $\mathrm{\alpha }$-D-Glucose.

3. $\mathrm{\alpha }$-D-Galactose and β-D-Maltose.

4. β-D-Galactose and β-D-Fructose.

The fat-soluble vitamin(s) is/are:

A hormone that contains iodine is:

Among the options provided, which acid is classified as a vitamin?

Carbon atoms of pentose sugars of nucleotides having phosphodiester linkage are:
1. 5' and 3'
2. 2' and 5'
3. 5' and 5'
4. '3 and 3'

Nucleic acids are the polymers of : 
1. Nucleosides
2. Nucleotides
3. Bases
4. Sugars

The incorrect statement among the following regarding glucose is:

Out of the three given structures, the correct statement regarding bonds present between C₁  &  C₄  and C₁  &  C₆  is

(i)
(ii)		(iii)