An aldehyde and a protein, respectively, of vitamin A found in the eye are

Options

A. Opsin and retinal
B. retinal and opsin
C. carotene and opsin
D. Keratin and carotene

Answer

To solve the question regarding the aldehyde and protein respectively of vitamin A found in the eye, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Components**:
- We need to identify the two components: an aldehyde and a protein related to vitamin A in the eye.

2. **Identifying the Aldehyde**:
- Vitamin A exists in different forms, one of which is retinal. Retinal is an aldehyde form of vitamin A and is crucial for vision.
- Therefore, the aldehyde we are looking for is **Retinal**.

3. **Identifying the Protein**:
- In the retina, there are photoreceptor cells that contain proteins. The protein associated with the photoreceptor cells in the eye is called opsin.
- Opsin combines with retinal to form rhodopsin in rod cells, which is essential for vision in low light conditions.

4. **Final Answer**:
- The aldehyde is **Retinal** and the protein is **Opsin**.

### Conclusion:
Thus, the correct answer to the question is: **Retinal and Opsin**.

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