Energy required to break one bond in DNA is approximately

Options

A. `10^(-10)` J
B. `10^(-18)` J
C. `10^(-7)` J
D. `10^(-20)` J

Explanation

To determine the energy required to break one bond in a DNA molecule, we can analyze the given options and identify the correct answer.

### Step-by-Step Solution:

1. **Understanding the Question**: We need to find the approximate energy required to break a single bond in a DNA molecule. This is a fundamental concept in biophysics and molecular biology.

2. **Analyzing the Options**: The options provided are:
- A) \(10^{-10}\) Joules
- B) \(10^{-18}\) Joules
- C) \(10^{-7}\) Joules
- D) \(10^{-20}\) Joules

3. **Recalling Biological Knowledge**: In molecular biology, the energy required to break a covalent bond typically ranges from \(10^{-20}\) to \(10^{-18}\) Joules. DNA consists of various types of bonds, including hydrogen bonds and covalent bonds, and the energy required to break these bonds can vary.

4. **Identifying the Correct Option**: Based on general knowledge about the energy required to break bonds in biological molecules, the energy required to break one bond in DNA is approximately \(10^{-20}\) Joules.

5. **Conclusion**: Therefore, the correct answer is option D, which states that the energy required to break one bond in DNA is approximately \(10^{-20}\) Joules.

### Final Answer:
The energy required to break one bond in DNA is approximately \(10^{-20}\) Joules (Option D).