Question

The difference between amylose and amylopectin is

<!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> NEET 2018

• A. Amylose is made up of glucose and galactose
• B. Amylopectin have $1\to 4\alpha$ -linkage and $1\to 6\alpha$ -linkage
• C. Amylose have $1\to 4\alpha$ -linkage and $1\to 6\beta$ -linkage
• D. Amylopectin have $1\to 4\alpha$ -linkage and $1\to 6\beta$ -linkage

Answer 1

The correct option is B Amylopectin have $1\to 4\alpha$ -linkage and $1\to 6\alpha$ -linkage

Amylose and Amylopectin are polymers of $\alpha \text{D-glucose}$, so $\beta$ -link is not possible. Amylose is linear with $1\to 4\alpha$ -linkage whereas Amylopectin is branched and has both $1\to 4\alpha$ and $1\to 6\alpha$-linkages.
Amylose:

Amylopectin: