Matching hexose structures to their carbohydrate occurrences

Steps:

• Identify hexose 1 as α-D-glucose, the monomer in glycogen linked by α-1,4 bonds.
• Identify hexose 2 as β-D-fructose, a component of sucrose with glucose via α-1,2-glycosidic bond.
• Identify hexose 3 as β-D-glucose, the monomer in cellulose with β-1,4 linkages.
• Match to option C: sucrose contains 2, cellulose contains 3, glycogen contains 1.

Why C is correct:

• Sucrose is a disaccharide of α-D-glucose and β-D-fructose; cellulose and glycogen are polysaccharides of specific glucose anomers, aligning with the structural definitions.

Why the others are wrong:

• A: Incorrectly assigns fructose (2) to cellulose, which uses only β-D-glucose.
• B: Swaps cellulose and glycogen monomers, ignoring α vs. β linkage differences.
• D: Misplaces fructose (3) in sucrose, which requires β-D-fructose specifically.

Final answer: C