Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Glycogen is a polysaccharide that serves as the primary form of energy storage in animals and fungi. It's similar to starch but has more extensive branching.
The basic unit that makes up glycogen; it can be compared to the individual energy units stored in your power bank.
Glycogenesis: This is the process of glycogen synthesis, where glucose molecules are added to chains of glycogen for storage.
Glycogenolysis: This is the process of breaking down glycogen into glucose to provide immediate energy, much like using up the charge from your power bank when you need it.