Escherichia coli is used extensively in biological research, because it is

Options

A. easily multiplied in host
B. easy to handle
C. easily available
D. easily cultured

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question is about Escherichia coli (E. coli), a bacterium commonly used in biological research.

2. **Understand the Context**: E. coli is utilized in various fields of biological research, including protein engineering and genetic research.

3. **Consider the Characteristics of E. coli**:
- **Genome Size**: E. coli has a relatively small genome, which simplifies genetic manipulation and study.
- **Growth Rate**: E. coli has a high growth rate compared to more complex organisms, allowing for rapid experimentation and results.
- **Model Organism**: E. coli is a well-studied model organism, meaning that a lot of research has been conducted on it, providing a wealth of knowledge and resources.

4. **Evaluate the Options**: The question likely provides multiple-choice answers regarding why E. coli is extensively used in research. Based on the characteristics discussed, the most relevant option would be that E. coli is "easy to culture."

5. **Select the Correct Answer**: Given the reasons outlined, the correct answer is that E. coli is extensively used in biological research because it is easy to culture.

**Final Answer**: E. coli is used extensively in biological research because it is easy to culture.

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