Glucose as the common monomer in polysaccharides

Steps:

• Examine the diagram to identify the monomer as glucose, a six-carbon sugar with aldehyde group and hydroxyls.
• Recall that glucose forms polymers through glycosidic bonds in carbohydrates.
• Match the monomer to polysaccharides: glycogen and amylopectin are glucose-based, while sucrose is not.
• Eliminate non-polymers or those with different monomers.

Why B is correct:

• Amylopectin is a branched polymer of glucose monomers linked by α-1,4 and α-1,6 glycosidic bonds, as defined in carbohydrate biochemistry.

Why the others are wrong:

• A: Glycogen contains glucose but is an animal storage form; the question likely specifies plant starch components like amylopectin.
• C: Sucrose is a disaccharide of glucose and fructose, not purely glucose-based.

Final answer: B