Which of the following is an example of aldohexose?

Options

A. Ribose
B. Fructose
C. Sucrose
D. Glucose

Explanation

To determine which of the following is an example of an aldohexose, we need to understand what an aldohexose is. An aldohexose is a type of sugar (monosaccharide) that contains six carbon atoms and an aldehyde group.

### Step-by-Step Solution:

1. **Identify the Definition of Aldohexose**:
- An aldohexose is a monosaccharide with six carbon atoms and an aldehyde functional group (–CHO).

2. **Analyze the Given Options**:
- We need to check the structures of the options provided (not listed here but typically include sugars like ribose, glucose, fructose, and sucrose).

3. **Check Each Option**:
- **Ribose**:
- Ribose has five carbon atoms (C5H10O5) and does not qualify as an aldohexose.
- **Fructose**:
- Fructose is a ketohexose (it has a ketone group instead of an aldehyde) and has six carbon atoms (C6H12O6), but it is not an aldohexose.
- **Sucrose**:
- Sucrose is a disaccharide (C12H22O11) and contains more than six carbon atoms, so it cannot be an aldohexose.
- **Glucose**:
- Glucose has six carbon atoms (C6H12O6) and contains an aldehyde group, making it an aldohexose.

4. **Conclusion**:
- The only option that fits the criteria of being an aldohexose is **Glucose**.

### Final Answer:
The example of an aldohexose is **Glucose**.