How much of blood plasma is water (approximately) ?

Options

A. `95%`
B. `91%`
C. `88%`
D. `80%`

Answer

To determine how much of blood plasma is water, we can follow these steps:

1. **Understand the Composition of Blood Plasma**: Blood plasma is the liquid component of blood and is primarily composed of water, proteins, and other substances.

2. **Identify the Percentage of Water in Blood Plasma**: It is known that blood plasma is approximately 92% water. This means that out of the total volume of plasma, 92% is made up of water.

3. **Consider Other Components of Blood Plasma**: The remaining 8% of blood plasma consists of vital proteins (about 7%) and other substances like mineral salts, sugars, and fats (about 1%).

4. **Evaluate the Options Provided**: If options are given, we can check which one matches the known percentage of water in blood plasma. In this case, the correct option is 92%.

5. **Conclude the Answer**: Therefore, the approximate percentage of water in blood plasma is 92%.