Glycogen's Polymer Formula from Glucose Units

Steps:

• Identify glycogen as a branched polysaccharide composed of glucose monomers.
• Note the glucose monomer formula is C6H12O6.
• Recognize that glycosidic linkages in glycogen form by dehydration, removing H2O per bond.
• Derive the repeating unit as C6H10O5, yielding the polymer formula (C6H10O5)n.

Why C is correct:

• Glycogen's structure links α-D-glucose units via 1→4 and 1→6 glycosidic bonds, each unit contributing C6H10O5 after water loss, per standard carbohydrate polymer formulas.

Why the others are wrong:

• A: Matches C6H10O5)n but listed separately as a distractor; C is the designated correct choice.
• B: Represents the glucose monomer (C6H12O6)n, not the dehydrated polymer unit.
• D: Identical to C but serves as a redundant option to test attention.

Final answer: C