Which of the following statements is right

MCQ

✓
Cellulose are linear polymers of $\beta - $glucose molecules with $\beta - 1,\,4 - $linkages
B
Starches are polymers of $\alpha - $glucose molecules with $\beta - 1,\,4 - $linkages and some $\beta - 1,\,6 - $cross-linkages
C
Proteins are polyamides of $\beta - $amino acids
D
The structural information about their biosynthesis is contained in a class of compounds called nucleic acids, e.g. $RNA$ and $DNA$

✓

Answer

Correct option: A.

Cellulose are linear polymers of $\beta - $glucose molecules with $\beta - 1,\,4 - $linkages

a
Proteins are natural polymers. They are large biological molecules consisting of one or more chains of $\alpha$ - amino acids.

Starch is a polymer of glucose. It exists in two forms amylose and amylopectin. Amylose is formed by linkage of glucose by $\alpha-1,4$ glucose unit. It is a linear polymer. Amylopectin is a branched polymer of glucose where two polymeric chains of glucose of alpha 1,4 glucose unit are linked by $\alpha-1,6$ linkage.

Cellulose is linear homopolysaccharide of $\beta$ - glucose units, which are linked together by $\beta-1,4$ glycosidic bonds.