Select ALL statements that correctly describe carbohydrate structures.

### Why this is right - **Monosaccharides are the simplest carbohydrate units**: they cannot be hydrolyzed into simpler carbohydrates. - **A ketose has one fewer chiral center than the corresponding aldose with the same carbon number**: the ketone carbonyl is internal and creates a different stereochemical count from an aldehyde sugar. - **Glycogen is a branched glucose storage polymer**: it stores glucose in animals. ### The concept Carbohydrates vary in carbon number, carbonyl type, and linkage pattern. These structural differences determine stereochemistry and biological function. ### The other options - **Cellulose is the principal storage polysaccharide in animals**: cellulose is a structural component of many plant cell walls; glycogen is an animal storage polysaccharide. ### Terms - **Hydrolysis**: bond cleavage by the addition of water. - **Polysaccharide**: a polymer made of many sugar units.