A genetically engineered bacterium first used for cleaning the oil spills, was a species of:

Options

A. Rhizobium
B. Escherichia
C. Psetdomonav
D. Bacillus

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about a genetically engineered bacterium that is used for cleaning oil spills. We need to identify the species of this bacterium.

2. **Identifying Key Terms**: The key terms in the question are "genetically engineered," "bacterium," and "oil spills." This indicates that we are looking for a bacterium that has been modified to enhance its ability to degrade oil.

3. **Exploring Bacterial Options**: The transcript discusses several bacteria:
- **Rhizobium**: Known for nitrogen fixation in legumes, not related to oil degradation.
- **Escherichia coli (E. coli)**: A common bacterium in the human gut, not involved in oil spill cleanup.
- **Pseudomonas**: Mentioned as a genus with species that can metabolize oil, making it a potential candidate.
- **Bacillus**: A rod-shaped bacterium, but not specifically linked to oil spills in the context given.

4. **Focusing on Pseudomonas**: The transcript emphasizes that Pseudomonas has species that can degrade crude oil. It mentions that genetic modification has enhanced this ability, making it suitable for cleaning oil spills.

5. **Identifying the Correct Species**: Among the species of Pseudomonas, **Pseudomonas putida** is specifically mentioned as being genetically engineered for this purpose.

6. **Conclusion**: The genetically engineered bacterium first used for cleaning oil spills is **Pseudomonas putida**.

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