An optically inactive amino acid is-

1.	Lactic acid	2.	Serine
3.	Alanine	4.	Glycine

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

The non-essential amino acid among the following is:
1. Lysine
2. Valine
3. Leucine
4. Alanine

1. Anomers

2. Epimers

3. Enantiomers

4. Diastereoisomers

A linkage present in proteins and peptides is:

1.		2.
3.		4.

Insulin regulates the metabolism of : 

The human body does not produce : 

An insoluble biomolecule in water is-

Cellulose is a straight-chain polysaccharide composed of only :

1. D-glucose units joined by $\mathrm{\alpha }$ - glycosidic linkage.

2. D-glucose units joined by $\mathrm{\beta }$ - glycosidic linkage.

3. D-galactose units joined by $\mathrm{\alpha }$ - glycosidic linkage.

4. D-galactose units joined by $\mathrm{\beta }$ - glycosidic linkage.

During the process of digestion, the proteins present in food materials are
hydrolysed to amino acids as shown below.

Proteins  \(\xrightarrow[]{\textbf{Enzyme(A)}}\mathrm{}\) Polypeptides  \(\xrightarrow[]{\textbf{Enzyme(B)}}\mathrm{}\)  Amino acids
 
Enzymes (A) and (B)  are respectively: