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The human red blood cells are about in d...

The human red blood cells are about ________in diameter.

A

`7.0 mu m`

B

`9.0 mu m`

C

`5.4mu m`

D

`4.5 mu m`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the diameter of human red blood cells, follow these steps: ### Step-by-Step Solution: 1. **Understand the Question**: The question asks for the diameter of human red blood cells (RBCs). 2. **Recall the Characteristics of RBCs**: Human red blood cells are known to be flexible, oval-shaped, and biconcave discs. 3. **Know the Average Size**: It is important to remember that the average diameter of mature human RBCs is approximately 7.2 micrometers. 4. **Evaluate the Options**: The options provided are: - 7.0 micrometers - 9.0 micrometers - 5.4 micrometers - 4.5 micrometers 5. **Select the Closest Value**: Among the options, 7.0 micrometers is the closest to the average diameter of 7.2 micrometers. 6. **Conclude the Answer**: Therefore, the correct answer is 7.0 micrometers. ### Final Answer: The human red blood cells are about **7.0 micrometers** in diameter. ---
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