Which one is unrelated ?

Options

A. Keratin
B. Elastin
C. Dextrin
D. Collagen

Answer

To determine which option is unrelated, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are carotene, elastin, dextrin, and collagen.

2. **Analyze Carotene**:
- Carotene is a type of protective protein.
- It is involved in protecting cells and is found in feeder hairs.
- **Category**: Protein.

3. **Analyze Elastin**:
- Elastin is a protein found in the extracellular matrix.
- It provides elasticity to tissues, allowing them to return to their original shape.
- **Category**: Protein.

4. **Analyze Dextrin**:
- Dextrin is a carbohydrate.
- It is produced by the hydrolysis of starch or glucose.
- **Category**: Carbohydrate.

5. **Analyze Collagen**:
- Collagen is a main structural protein found in the extracellular matrix and connective tissues.
- **Category**: Protein.

6. **Compare the Categories**:
- Carotene, elastin, and collagen are all proteins.
- Dextrin is a carbohydrate.

7. **Conclusion**:
- Since dextrin is the only carbohydrate among the options, it is the odd one out.
- Therefore, the answer is **C: Dextrin**.

### Final Answer:
C: Dextrin is the unrelated option.

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