The human body has about 100 billion cells. This number can be written in exponential forms as

Options

A. `10^(-11)`
B. `10^(11)`
C. `10^(9)`
D. `10^(-9)`

Answer

To express the number of cells in the human body, which is about 100 billion, in exponential form, follow these steps:

### Step-by-Step Solution:

1. **Understand the Value of 100 Billion**:
- 100 billion can be written in numerical form as 100,000,000,000.

2. **Count the Number of Zeros**:
- In the number 100,000,000,000, there are 11 zeros following the 1.

3. **Express in Exponential Form**:
- The number can be expressed as \( 10^{11} \) because 1 followed by 11 zeros is equal to 100 billion.

4. **Final Answer**:
- Therefore, 100 billion can be written in exponential form as \( 10^{11} \).