Which of the following is monosaccharide

Options

A. Galactose
B. Sucrose
C. Glycogen
D. Cellulose

Explanation

To determine which of the following is a monosaccharide among the given options (galactose, sucrose, glycol, and cellulose), we need to understand what a monosaccharide is.

### Step-by-Step Solution:

1. **Define Monosaccharide**:
- Monosaccharides are the simplest form of carbohydrates. They cannot be hydrolyzed into simpler sugars. Examples include glucose, galactose, and fructose.

2. **Analyze the Options**:
- **Galactose**: This is a monosaccharide. It is a simple sugar that cannot be broken down into simpler sugars upon hydrolysis.
- **Sucrose**: This is a disaccharide, which means it is composed of two monosaccharide units (glucose and fructose). It can be hydrolyzed into these simpler sugars.
- **Glycogen**: This is a polysaccharide, which is a complex carbohydrate made up of many glucose units. It cannot be classified as a monosaccharide.
- **Cellulose**: This is also a polysaccharide made of many glucose units linked together. It is not a monosaccharide.

3. **Conclusion**:
- Among the options provided, **galactose** is the only monosaccharide. Therefore, the correct answer is **galactose**.

### Final Answer:
**Galactose** is the monosaccharide among the options given.

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