Plasma differs from serum in

Options

A. Presence of clotting factors
B. Absence of clotting factors
C. Presence of minerals
D. Presence of glucose

Answer

To solve the question "Plasma differs from serum in," we need to understand the key differences between plasma and serum. Here’s a step-by-step breakdown:

### Step 1: Define Plasma and Serum
- **Plasma** is the liquid component of blood that contains water, electrolytes, proteins (such as albumins and globulins), hormones, and waste products. It also contains clotting factors, which are essential for blood coagulation.
- **Serum** is the liquid that remains after blood has clotted. It is essentially plasma without the clotting factors.

### Step 2: Identify the Components
- Plasma contains:
- Clotting factors (important for blood coagulation)
- Electrolytes
- Proteins (albumins, globulins)
- Nutrients (like glucose)

- Serum contains:
- Electrolytes
- Proteins (but lacks clotting factors)
- Nutrients (like glucose)

### Step 3: Analyze the Options
Now, let's analyze the options provided in the question:
1. **Presence of clotting factor** - This is true for plasma, as it contains clotting factors, while serum does not.
2. **Absence of clotting factor** - This is true for serum, not plasma, so this option is incorrect.
3. **Presence of mineral** - Both plasma and serum contain minerals, so this option is incorrect.
4. **Presence of glucose** - Glucose is present in both plasma and serum, so this option is also incorrect.

### Step 4: Conclusion
From the analysis, the correct answer is that plasma differs from serum in the **presence of clotting factors**. Therefore, the correct option is the first one.

### Final Answer
Plasma differs from serum in the presence of clotting factors.

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