What is the importance of plasma proteins?

Explanation

### Step-by-Step Solution:

1. **Definition of Plasma Proteins**:
- Plasma proteins, also known as blood proteins, are proteins present in blood plasma. They play crucial roles in various physiological functions.

2. **Functions of Plasma Proteins**:
- **Transportation**: Plasma proteins are essential for the transport of various substances in the blood, including lipids, hormones, vitamins, and minerals.
- **Immune Response**: They play a significant role in the immune system, helping to protect the body against infections by recognizing and neutralizing pathogens.
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