Glycogen is a homonpolymer made up of

Options

A. glucose units
B. galactose units
C. ribose units
D. amino acids

Explanation

**Step-by-Step Solution:**

1. **Understanding Glycogen**: Glycogen is classified as a storage polysaccharide found in animals. It serves as a form of energy storage.

2. **Composition of Glycogen**: Glycogen is a homopolymer, meaning it is composed of only one type of monomer. In the case of glycogen, the monomer is glucose.

3. **Linkages in Glycogen**: The glucose molecules in glycogen are linked together primarily through α(1→4) glycosidic bonds. This means that the first carbon of one glucose molecule is linked to the fourth carbon of another glucose molecule.

4. **Branching in Glycogen**: In addition to the linear chains formed by the α(1→4) linkages, glycogen has branching points. These branches occur through α(1→6) linkages, which happen approximately every 8 to 12 glucose units.

5. **Conclusion**: Therefore, glycogen is a homopolymer made up of glucose units linked together by glycosidic bonds, with branching occurring at specific intervals.

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

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