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.
cellulose and starch have the same function in plant cells.
starch, cellulose, and glycogen are monosaccharides.
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 "Cellulose and starch have the same function in plant cells": Starch is a storage polysaccharide in plants, while cellulose is structural (cell wall). Their functions differ, so this is false.
3. For "Starch, cellulose, and glycogen are monosaccharides": These are polysaccharides (polymers of monosaccharides like glucose), not monosaccharides, so this is false.
4. For "Glycogen has more branching than starch": Glycogen has a highly branched structure, more so than starch (which 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.