Plasma proteins which protect our body from pathogens are

Options

A. Albumins
B. Globulins
C. Fibrinogen
D. Heparin

Answer

To solve the question regarding which plasma proteins protect our body from pathogens, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Plasma Proteins**: The question provides four options: albumins, globulins, fibrinogen, and heparin. We need to identify which of these are plasma proteins and their functions.

2. **Evaluate Each Option**:
- **Albumins**: These proteins constitute about 55% of total plasma proteins. Their primary functions include maintaining osmotic pressure and transporting insoluble molecules. They do not have a direct role in protecting the body from pathogens.
- **Globulins**: This group of proteins constitutes approximately 38% of plasma proteins. Globulins play a significant role in the immune system, specifically in fighting pathogens. They include immunoglobulins (e.g., IgA, IgG, IgE, IgM), which are crucial for immune response.
- **Fibrinogen**: This protein makes up about 7% of plasma proteins and is primarily involved in the blood clotting process. It is converted into fibrin during clot formation, which does not relate to pathogen protection.
- **Heparin**: This is an anticoagulant and not a plasma protein involved in immune defense. Therefore, it can be eliminated as an option.

3. **Conclusion**: After evaluating the functions of each protein, we conclude that globulins are the plasma proteins that protect our body from pathogens.

4. **Final Answer**: The correct answer is **globulins**.