Glucose and fructose are:

Options

A. isomers of each other
B. Homologous of each other
C. anomers of each other
D. enantiomers of each other

Explanation

To determine the relationship between glucose and fructose, we can follow these steps:

### Step 1: Draw the Structures of Glucose and Fructose
- **Glucose**: It is an aldohexose, meaning it contains an aldehyde group. The structure can be represented as:
```
CHO
|
H-C-OH
|
H-C-OH
|
H-C-OH
|
CH2OH
```

- **Fructose**: It is a ketohexose, meaning it contains a ketone group. The structure can be represented as:
```
CH2OH
|
C=O
|
H-C-OH
|
H-C-OH
|
CH2OH
```

### Step 2: Analyze the Molecular Formula
- Both glucose and fructose have the same molecular formula: C6H12O6. This indicates that they are composed of the same number of carbon, hydrogen, and oxygen atoms.

### Step 3: Identify the Type of Isomerism
- Since glucose and fructose have the same molecular formula but different structural formulas, they exhibit **functional isomerism**. This is a type of isomerism where compounds have the same molecular formula but different functional groups.

### Step 4: Check the Options Given
- The options provided include:
1. Isomers of each other
2. Homologous series
3. Enantiomers
- Based on our analysis, glucose and fructose are isomers of each other due to their different functional groups (aldehyde in glucose and ketone in fructose).

### Conclusion
- The correct answer is that glucose and fructose are **isomers of each other**.

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