Question

Which of the following carbohydrates are branched polymer of glucose?

• A. Amylose
• B. Glycogen
• C. Cellulose
• D. Amylopectin

Answer 1

Answer: (B), (D)

Amylopectin

$\text{Analysing the options}$

Option (A):

Amylose has a straight chain of glucose. As each unit of amylose is made up of $\alpha -D-$ glucose. This is with each other through $\alpha (1\to 4)$ glycosidic bonds.


Option (B):

Amylopectin is a highly branched polymer of $\alpha -D-$glucose units found in plants and they are water insoluble polysaccharide. In the structure of amylopectin $C1$ is linked with $C4$ in straight chain linkage whereas $C1$ and $C6$ shows branched linkage.


Option (C):

Cellulose has a straight chain of $\beta -D-$glucose.


Option (D):

Glycogen is a multi-branched polysaccharide of glucose which serves as a form of energy storage in animals, fungi and bacteria.


Structures of glycogen is similar to amylopectin but glycogen is more branched

Hence, the correct options are $\left(B\right)$ and $\left(D\right)$.