Question

The monomer units of starch are

• A. $\alpha -$ glucose
• B. $\beta -$ glucose
• C. pyranose
• D. galactose

Answer 1

Answer: (A)

$\alpha -$ glucose

Answer 2

The monomer unit of starch is $\alpha -$ glucose $\underset{starch}{\mathop{{{({{C}_{6}}{{H}_{12}}{{O}_{5}})}_{n}}}}\,\xrightarrow{Hydrolysis}\underset{maltose}{\mathop{{{C}_{12}}{{H}_{22}}{{O}_{11}}}}\,$ $\xrightarrow{Hydrolysis}\underset{\alpha -\text{glucose}}{\mathop{{{C}_{6}}{{H}_{12}}{{O}_{6}}}}\,$