Streptomyces griseus produces antibiotic

Options

A. Terramycin
B. Chloramphenicol
C. Neomycin
D. Streptomycin

Answer

**Step-by-Step Solution:**

1. **Understanding Antibiotics**: Antibiotics are chemicals produced by microorganisms that can kill or inhibit the growth of pathogenic bacteria. They are crucial in treating bacterial infections.

2. **Identifying the Source of Antibiotics**: Antibiotics can be derived from two main types of microorganisms: bacteria and fungi. The first antibiotic, penicillin, was discovered from the fungus Penicillium notatum.

3. **Analyzing the Given Options**: The question provides four options regarding the antibiotic produced by *Streptomyces griseus*:
- a) Pteromycine
- b) Chloroamphenicol
- c) Neomycine
- d) Streptomycine

4. **Evaluating Each Option**:
- **Option a: Pteromycine** - This antibiotic is derived from *Streptomyces aureofaciens*, not *Streptomyces griseus*. Therefore, this option is incorrect.
- **Option b: Chloroamphenicol** - This antibiotic is obtained from *Streptomyces venezuelae*. Hence, this option is also incorrect.
- **Option c: Neomycine** - This antibiotic is produced by *Streptomyces fradiae*, making this option incorrect as well.
- **Option d: Streptomycine** - This antibiotic is indeed produced by *Streptomyces griseus*. Therefore, this option is correct.

5. **Conclusion**: After evaluating all the options, the correct answer is **d) Streptomycine**, as it is the antibiotic produced by *Streptomyces griseus*.

---