The human body does not produce

(1) DNA

(2) vitamins

(3) hormones

(4) enzymes

Scurvy is caused due to the deficiency of vitamin:-

An acid that acts as a vitamin is

Which of the following tests is not used for detecting proteins?

1. Ninhydrin test

2. Millon's test

3. Molisch's test

4. Biuret test

Which structure(s) of proteins remains(s) intact during denaturation process?

1. Both secondary and tertiary structures

2. Primary structure only

3. Secondary structure only

4. Tertiary structure only

The compound that does not reduce Benedict's solution is: 

If $\mathrm{\alpha }$—D—glucose is dissolved in water and kept for a few hours, the major constituent(s) present in the solution is/are:

The structural feature which distinguishes proline from other natural $\alpha$-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.

Insulin and carboxypeptidase contains respectively

1. Cu, Zn

2. Ag, Cu

3.  Cu, Cu

4.  Zn, Zn

$\mathrm{\alpha }$-helix is also known as:

1.  Sheet structure

2.  Flat structure

3.  3.613 helix

4.  4.915 helix