Question

b. D is fructose and is a disaccharide sugar
c. A is an amino acid and participates in protein formation
d. C is a cholesterol and maintains membrane fluidity
3. The acidic nature of amino acids depends on
a. An amino group and a carboxyl group
b. R functional groups
c. Number of hydrogen atoms
d. All of these
4. The helical structure of proteins is stabilized by
a. Dipeptide bonds b. Hydrogen bonds
2 Dentide honde

Answer 1

3. The acidic nature of amino acids depends on:

An amino group and a carboxyl group.

4. The helical structure of protein is stabilized by:

Hydrogen bonds.

Explanation:

The carboxyl group present in the amino acid decides the nature of amino acid. If amino group is not present but only carboxyl group is present in the amino acid, then it is considered as an acidic amino acid such as phenylalanine. But the presence of only amino group makes it a basic amino acid.

The helical structure of protein is stabilized by Hydrogen bonds. In helical structure, the carbonyl group present in it is bonded to the amide group by hydrogen bonds.