Question

the models show the structures of the carbohydrates cellulose, starch, and glycogen.
cellulose branched starch glycogen
select the true statements.
the parallel chains in cellulose give cellulose its strength and rigidity.
starch, cellulose, and glycogen are monosaccharides.
cellulose and starch have the same function in plant cells.
glycogen has more branching than starch.

Explanation:

1. For "The parallel chains in cellulose give cellulose its strength and rigidity": Cellulose has linear, parallel chains that form strong hydrogen bonds between them, providing structural strength (e.g., in plant cell walls), so this is true.
2. For "Starch, cellulose, and glycogen are monosaccharides": Starch, cellulose, and glycogen are polysaccharides (made of many monosaccharide units like glucose), not monosaccharides, so this is false.
3. For "Cellulose and starch have the same function in plant cells": Starch is a storage polysaccharide in plants, while cellulose is a structural polysaccharide (in cell walls). Their functions differ, so this is false.
4. For "Glycogen has more branching than starch": Glycogen has a highly branched structure compared to starch (starch has less branching), so this is true.

So the true statements are "The parallel chains in cellulose give cellulose its strength and rigidity" and "Glycogen has more branching than starch".

Answer:

• The parallel chains in cellulose give cellulose its strength and rigidity.
• Glycogen has more branching than starch.