Question

Starch is polymer of:

• A. Glucose
• B. Fructose
• C. Maltose
• D. Sucrose

Answer 1

The correct option is A

Glucose

The explanation for the correct option:

Option (A) Glucose

• Starch is a glucose polymer.
• It is a polysaccharide i.e. made up of many units of glucose.
• It is generated via the glycosidic bonding of glucose units.
• Starch has the fundamental formula${\left({\mathrm{C}}_6{\mathrm{H}}_{10}{\mathrm{O}}_5\right)}_{\mathrm{n}}$.
• It comes in two varieties: amylose and amylopectin.
• Amylose is generated when glucose is linked by a $\mathrm{alpha}1,4$ glucose unit. It is a polymer that is linear.
• Amylopectin is a branched glucose polymer composed of two polymeric chains of glucose with $\mathrm{alpha}1,4$ glucose units joined by an$\mathrm{alpha}1,6$.

The explanation for incorrect options:

Option (B) Fructose

• Fructose, often known as fruit sugar, is a ketonic simple sugar present in many plants.
• It is frequently linked to glucose to produce the disaccharide sucrose.
• It is one of three dietary monosaccharides, along with glucose and galactose, that are immediately absorbed into the bloodstream following digestion.
• But it is not the monomer of Starch so, this option is incorrect.

Option (C) Maltose

• Maltose, also known as maltobiose or malt sugar, is a disaccharide that is created by joining two units of glucose with a bond.
• The two glucose molecules in the isomer isomaltose are connected by a bond.
• But it is not the monomer of Starch so, this option is incorrect.

Option (D) Sucrose

• Sucrose is a disaccharide sugar made up of glucose and fructose subunits.
• It is naturally generated in plants and is the primary component of white sugar. Its chemical formula is ${\mathrm{C}}_{12}{\mathrm{H}}_{22}{\mathrm{O}}_{11}$.
• But it is not the monomer of Starch so, this option is incorrect.

Hence, the correct option is (a), Starch is a glucose polymer.