identify the incorrect match between protein and its role

Options

A. keratin - Structural component of hair
B. Immunoglobins-Protection of body against diseases
C. Haemoglobin - Transport of oxygen in muscles
D. Thrombin - Blood clotting.

Answer

To identify the incorrect match between proteins and their roles, we will analyze each option provided in the question.

### Step 1: Analyze the options
1. **Keratin**: This protein is known to be a structural component of hair, nails, and the outer layer of skin. This match is correct.

2. **Immunoglobulin**: These proteins, also known as antibodies, play a crucial role in the immune response by protecting the body against diseases. This match is correct.

3. **Hemoglobin**: This protein is responsible for transporting oxygen in the blood. However, the question states that it transports oxygen in muscles, which is incorrect. Hemoglobin is found in red blood cells and transports oxygen throughout the body, but not specifically in muscle tissue.

4. **Thrombin**: This protein is involved in blood clotting and helps prevent excessive bleeding. This match is correct.

### Step 2: Identify the incorrect match
From the analysis, we see that the incorrect match is:
- **Hemoglobin**: Transport of oxygen in muscles (this is incorrect because myoglobin is the protein that transports oxygen in muscles).

### Conclusion
The incorrect match between protein and its role is **Hemoglobin - Transport of oxygen in muscles**.

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