Question

what is a difference between starch and glycogen?
starch stores energy, and glycogen provides structural support.
starch is found in plants, and glycogen is found in animals.
starch is composed of fructose, and glycogen is composed of glucose
starch is a monomer, and glycogen is a polymer

Explanation:

Starch is a polysaccharide used for energy storage in plants. Glycogen is also a polysaccharide used for energy storage but in animals.

• First option: Both starch and glycogen store energy. Cellulose (not glycogen) provides structural support in plants.
• Second option: Starch is in plants (e.g., potatoes have starch), glycogen is in animals (e.g., stored in liver and muscle cells).
• Third option: Both starch and glycogen are composed of glucose units.
• Fourth option: Both starch and glycogen are polymers (made of many glucose monomers).

Answer:

Starch is found in plants, and glycogen is found in animals.