Glycogen is most structurally similar to

Options

A. Glucose
B. starch
C. maltose
D. cellulose

Answer

To determine which substance glycogen is most structurally similar to, we need to analyze the options provided: glucose, starch, maltose, and cellulose.

### Step-by-Step Solution:

1. **Understanding Glycogen**: Glycogen is a polysaccharide that serves as a form of energy storage in animals. It is made up of glucose units linked together.

**Hint**: Remember that glycogen is a storage form of glucose in animals.

2. **Analyzing the Options**:
- **Glucose**: This is a monosaccharide, a single unit of sugar. Glycogen is made of multiple glucose units, so it is not structurally similar to glucose.

**Hint**: Monosaccharides are single sugar units, while glycogen is a polymer made of many sugar units.

- **Starch**: Starch is also a polysaccharide made up of glucose units. It serves as the primary energy storage in plants. Both glycogen and starch have similar structures, as they consist of glucose linked by alpha 1,4 and alpha 1,6 glycosidic bonds.

**Hint**: Look for other polysaccharides that are made of the same monomer as glycogen.

- **Maltose**: Maltose is a disaccharide, which means it consists of only two sugar units. Since glycogen is a polysaccharide, it cannot be structurally similar to maltose.

**Hint**: Disaccharides are not the same as polysaccharides; think about the number of sugar units.

- **Cellulose**: Cellulose is a polysaccharide made of glucose, but it has a different structure and function. The glucose units in cellulose are linked by beta 1,4 glycosidic bonds, which makes it structurally distinct from glycogen.

**Hint**: Consider the type of glycosidic bonds when comparing polysaccharides.

3. **Conclusion**: Since glycogen and starch are both polysaccharides made of glucose and have similar types of glycosidic linkages, glycogen is most structurally similar to starch.

**Final Answer**: Glycogen is most structurally similar to **starch**.