Which is false about antibiotics ?

Options

A. Coined by Waksman (1942)
B. Produced by microorganisms
C. Produce allergy in some persons
D. Cure all diseases

Answer

**Step-by-Step Solution:**

1. **Understanding Antibiotics**: Antibiotics are substances that inhibit the growth of or kill bacteria. They are primarily used to treat bacterial infections.

2. **Identifying the Statements**: The question asks which statement about antibiotics is false. We need to evaluate each statement provided.

3. **Evaluating the First Statement**: The first statement mentions that the term "antibiotics" was coined by Selman Waksman in 1942. This is true. Waksman is credited with the discovery of several antibiotics, and thus this statement is correct.

4. **Evaluating the Second Statement**: The second statement claims that antibiotics are produced by bacteria, fungi, and other microorganisms. This is also true, as many antibiotics are derived from natural sources, including bacteria and fungi. Therefore, this statement is correct.

5. **Evaluating the Third Statement**: The third statement suggests that antibiotics can produce allergic reactions in some individuals. This is true as well; some people may have allergic reactions to certain antibiotics. Hence, this statement is correct.

6. **Evaluating the Fourth Statement**: The last statement claims that antibiotics can cure all diseases. This statement is false. Antibiotics are effective against bacterial infections but do not work against viral infections or all diseases. Therefore, this statement is incorrect.

7. **Conclusion**: The false statement about antibiotics is that they can cure all diseases. Thus, the correct answer to the question is option number 4.

---