Antibiotic penicilin is produced from a:

Options

A. Bacteria
B. Fungus
C. Lichen
D. Algae

Explanation

**Step-by-Step Solution:**

1. **Understanding Antibiotics**: Antibiotics are chemical substances produced by certain microorganisms that can kill or inhibit the growth of other microorganisms, particularly pathogens (disease-causing organisms).

2. **Identifying the First Antibiotic**: The first antibiotic discovered was penicillin, which is significant in the field of medicine for its ability to treat bacterial infections.

3. **Source of Penicillin**: Penicillin is produced from a specific type of microbe. In this case, it is derived from a fungus.

4. **Name of the Fungus**: The fungus responsible for the production of penicillin is known as *Penicillium notatum*.

5. **Discovery of Penicillin**: The antibiotic penicillin was discovered by the scientist Alexander Fleming, who observed its antibacterial properties.

6. **Conclusion**: Therefore, the correct answer to the question "Antibiotic penicillin is produced from a:" is that it is produced from a fungus.

**Final Answer**: Penicillin is produced from a fungus, specifically *Penicillium notatum*.

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