`%` of daily destruction of RBC `:-`

Options

A. `1%`
B. `5%`
C. `10%`
D. `20%`

Answer

To determine the percentage of daily destruction of red blood cells (RBCs), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Lifespan of RBCs**:
- Red blood cells (RBCs) have an average lifespan of about 120 days.

2. **Calculate the Total Number of RBCs**:
- The body maintains a vast number of RBCs, approximately \(10^{12}\) (1 trillion) RBCs in circulation.

3. **Determine Daily Destruction Rate**:
- It is estimated that around \(10^{11}\) (100 billion) RBCs are destroyed daily due to senescence (aging).

4. **Calculate the Percentage of Daily Destruction**:
- To find the percentage of daily destruction, we can use the formula:
\[ \text{Percentage of daily destruction} = \left( \frac{\text{Daily destruction}}{\text{Total RBCs}} \right) \times 100 \]
- Substituting the values:
\[ \text{Percentage of daily destruction} = \left( \frac{10^{11}}{10^{12}} \right) \times 100 = 10\% \]

5. **Conclusion**:
- The percentage of daily destruction of RBCs is approximately **1%** of the total RBC population.

### Final Answer:
- The correct answer is **1%**.

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