An insoluble biomolecule in water is-

1.	$\mathrm{\alpha }$-keratin	2.	Haemoglobin
3.	Ribonuclease	4.	Adenine

The biomolecule that contain non-transitional metal ion is: 

1. Vitamin ${\mathrm{B}}_{12}$

2. Chlorophyll

3. Haemoglobin

4. Insulin

The human body does not produce : 

Insulin regulates the metabolism of : 

An acids among the followingthat acts as vitamin is:

1. Benzoic acid

2. Ascorbic acid

3. Oxalic acid

4. Formic acid

A linkage present in proteins and peptides is:

1.		2.
3.		4.

An optically inactive amino acid is-

The incorrect statement among the following options is: 

1. Chlorophyll is responsible for the synthesis of carbohydrates in plants.

2. The compound formed by the addition of oxygen to hemoglobin is called oxyhemoglobin.

3. Acetylsalicylic acid is known as aspirin.

4. The metal ion present in vitamin B12 is ${\mathrm{Mg}}^{++}$

Waxes are esters of:

1. Glycerol and fatty acid.

2. Long-chain alcohols and long-chain fatty acids.

3. Glycerol.

4. Long-chain alcohol.

Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor. M is: