Streptomyces venezuelae is used to obtain:

Options

A. chloromycetin
B. aureomycin
C. tetracycline
D. streptomycin

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about Streptomyces venezuelae. This is a species of bacteria belonging to the genus Streptomyces.

2. **Characteristics of Streptomyces**: Streptomyces are gram-positive bacteria that are filamentous in nature and are known to be soil-dwelling. They have a unique spore-bearing stage.

3. **Production of Antibiotics**: Streptomyces species are known for their ability to produce various antibiotics. Streptomyces venezuelae is specifically known for producing chloramphenicol.

4. **Understanding Chloramphenicol**: Chloramphenicol is an antibiotic that inhibits the growth of other microbes. It is significant because it was one of the first antibiotics to be manufactured synthetically.

5. **Alternative Name**: Chloramphenicol is also known by the name chloromycetin, which is important to note as it relates directly to the question.

6. **Conclusion**: Therefore, the correct answer to the question is that Streptomyces venezuelae is used to obtain chloromycetin (chloramphenicol).

**Final Answer**: Chloromycetin (Chloramphenicol).

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