Glycogen is a homonpolymer made up of

Options

A. Glucose units
B. Galactose units
C. Ribose units
D. Amino acids

Answer

**Step-by-Step Solution:**

1. **Understanding Glycogen**: Glycogen is a type of biomolecule known as a homopolymer. This means it is composed of repeating units of the same type of monomer.

2. **Identifying the Monomer**: The monomer that makes up glycogen is glucose. Glycogen is essentially a polymer formed by the linkage of many glucose molecules.

3. **Function of Glycogen**: Glycogen serves as the main storage form of glucose in animals. It is primarily stored in the liver and muscle tissues.

4. **Synthesis of Glycogen**: The synthesis of glycogen from glucose units is facilitated by an enzyme called glycogen synthase.

5. **Breakdown of Glycogen**: When blood sugar levels decrease, glycogen is broken down into glucose through a process called glycogenolysis. This process releases glucose into the bloodstream, providing energy to the body.

6. **Energy Source**: Glycogen acts as a quick source of energy, especially during intense physical activity, as it can be rapidly converted back into glucose.

**Final Answer**: Glycogen is a homopolymer made up of glucose units.

---