Question

the models show the structures of the carbohydrates cellulose, starch, and glycogen.
cellulose branched starch glycogen
compare the chemical structures of cellulose, starch, and glycogen.

	cellulose	starch	glycogen
is a polysaccharide
has parallel rows

Explanation:

1. Branched Structure:

• Cellulose: Its structure is linear (no branches), so the box is unchecked.
• Starch (branched starch shown): Has some branching, so the box is checked.
• Glycogen: Highly branched, so the box is checked.

1. Polysaccharide:

• All three (cellulose, starch, glycogen) are polysaccharides (made of many sugar units), so all boxes are checked.

1. Parallel Rows:

• Cellulose: The model shows parallel rows (linear chains aligned), so the box is checked.
• Starch: The branched starch model does not show parallel rows, so the box is unchecked.
• Glycogen: The model is highly branched, no parallel rows, so the box is unchecked.

Answer:

	cellulose	starch	glycogen
is a polysaccharide	$\blacksquare$ (check)	$\blacksquare$ (check)	$\blacksquare$ (check)
has parallel rows	$\blacksquare$ (check)	$\square$ (uncheck)	$\square$ (uncheck)

(Note: In the table, $\blacksquare$ represents a checked box and $\square$ represents an unchecked box. Adjust based on the actual checkbox marking method, e.g., ticking or coloring the box.)