Name of the first antibiotic to be discovered :-

Answer

**Step-by-Step Solution:**

1. **Understanding Antibiotics**: Begin by defining what antibiotics are. Antibiotics are substances used to kill or inhibit the growth of bacteria, helping to treat bacterial infections.

2. **Historical Context**: Recognize the significance of antibiotics in medicine. They have revolutionized the treatment of bacterial infections and have saved countless lives.

3. **Identify the Discoverer**: The first antibiotic was discovered by a notable figure in microbiology. This individual is Sir Alexander Fleming, a Scottish microbiologist.

4. **Accidental Discovery**: Note that the discovery of the first antibiotic was accidental. Fleming discovered penicillin while working with Staphylococcus bacteria. He noticed that a mold (Penicillium notatum) had contaminated his Petri dishes and was killing the bacteria.

5. **Name the Antibiotic**: The first antibiotic discovered is **penicillin**. It became widely used for treating various bacterial infections.

6. **Applications of Penicillin**: Mention the types of infections that penicillin is effective against, such as respiratory tract infections, scarlet fever, ear infections, and skin infections.

7. **Conclusion**: Summarize that the first antibiotic discovered was penicillin, which has had a profound impact on medical treatments.

**Final Answer**: The first antibiotic to be discovered is **penicillin**.

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