Which of the following carbohydrate is a monosaccharide?

Options

A. Sucrose
B. Maltose
C. Ribose
D. Glycogen

Answer

To determine which of the following carbohydrates is a monosaccharide, we need to understand the definitions of the different types of carbohydrates:

1. **Monosaccharides**: These are the simplest form of carbohydrates, consisting of single sugar units. Examples include glucose, fructose, and ribose.

2. **Disaccharides**: These are carbohydrates formed by the combination of two monosaccharide units. Examples include sucrose (glucose + fructose) and maltose (glucose + glucose).

3. **Polysaccharides**: These are complex carbohydrates made up of long chains of monosaccharide units. Examples include starch and glycogen.

Now, let's analyze the options provided:

- **Sucrose**: This is a disaccharide composed of glucose and fructose.
- **Maltose**: This is also a disaccharide made of two glucose units.
- **Ribose**: This is a monosaccharide, specifically a pentose sugar.
- **Glycogen**: This is a polysaccharide, which is a storage form of glucose in animals.

From the analysis, we can conclude that the only monosaccharide among the options is **ribose**.

**Final Answer**: Ribose is the monosaccharide.