Question

glycogen is

a. a monosaccharide
b. a polysaccharide
c. a lipid storage product
d. a polypeptide
e. a protein

Explanation:

Identify the macromolecule class of glycogen

Glycogen is a highly branched polymer of glucose monomers, which classifies it as a carbohydrate.

Determine the specific carbohydrate type

Since it is composed of many linked monosaccharide (glucose) units, it is classified as a polysaccharide.

Evaluate the given options

A. Monosaccharide: Incorrect (glucose is a monosaccharide, glycogen is a polymer).
B. Polysaccharide: Correct.
C. Lipid storage product: Incorrect (glycogen is a carbohydrate, not a lipid).
D. Polypeptide: Incorrect (polypeptides are chains of amino acids).
E. Protein: Incorrect (proteins are composed of polypeptides).

Answer:

• (A) A monosaccharide
• (B) A polysaccharide (Correct answer)
• (C) A lipid storage product
• (D) A polypeptide
• (E) A protein