The RBC deficiency is a deficiency disease of:

1.	Vitamin B1	2.	Vitamin B2
3.	Vitamin B12	4.	Vitamin B6

Which of the following is not an essential amino acid : 

Monosaccharides are:

Amino acids exhibit amphoteric behavior as:

1. They can act both as an acid and as a base.

2. They can act only as an acid but not as a base.

3. They can act only as a base but not an acid.

4. None of the above.

α-helix structure of proteins is stabilized by :

Reducing sugars are -

Glucose and Fructose can be distinguished by the use of :
1. Fehling solution 
2. Tollen's reagent 
3. Bromine water 
4. All of the above

In both DNA and RNA, heterocyclic base and phosphate ester linkages are at:

The structure that represents the peptide chain is:

1.
2.
3.
4.

$\alpha$-D-glucose and β-D-glucose are:

1. Epimers

2. Anomers

3. Functional isomers

4. Chain isomers