Length of DNA in E. coli is

Options

A. 2.2 m
B. 1.36 mm
C. 1.36m
D. 3.4 m

Answer

To determine the length of DNA in E. coli, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organism**: We are focusing on E. coli, which is a common bacterium used in molecular biology studies.

2. **Understand the Length of E. coli DNA**: The length of DNA in E. coli is approximately 1.36 mm. This is a crucial piece of information as it gives us the total length of the DNA molecule present in this organism.

3. **Convert Units if Necessary**: It is important to note that the length is often expressed in micrometers (µm) or millimeters (mm). In this case, 1.36 mm can be converted to micrometers for clarity:
- 1 mm = 1000 µm
- Therefore, 1.36 mm = 1360 µm.

4. **Conclusion**: The length of DNA in E. coli is 1.36 mm or 1360 µm.

### Final Answer:
The length of DNA in E. coli is **1.36 mm**.

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