Antibiotic are drugs commonly used to cure diseases of

Options

A. Fungi
B. Viruses
C. Protozoans
D. Bacteria

Explanation

**Step-by-Step Solution:**

1. **Understanding Antibiotics**: Antibiotics are drugs that are used to treat infections caused by microorganisms. They can either kill the bacteria or inhibit their growth.

2. **Identifying the Types of Microorganisms**: The question provides four options: fungi, viruses, protozoans, and bacteria. We need to determine which of these is commonly treated with antibiotics.

3. **Analyzing Each Option**:
- **Fungi**: While some antifungal medications exist, antibiotics are not primarily used to treat fungal infections. Therefore, this option is incorrect.
- **Viruses**: Antibiotics are ineffective against viruses. Conditions like the common cold and flu are caused by viruses and cannot be treated with antibiotics. Thus, this option is also incorrect.
- **Protozoans**: Antibiotics are not commonly used to treat protozoan infections. There are specific medications for protozoan diseases, but antibiotics are not the primary treatment. Hence, this option is incorrect as well.
- **Bacteria**: Antibiotics are specifically designed to target bacterial infections, such as tuberculosis and strep throat. This is the correct option.

4. **Conclusion**: Based on the analysis, the correct answer is that antibiotics are commonly used to cure diseases caused by **bacteria**.

**Final Answer**: Antibiotics are drugs commonly used to cure diseases of **bacteria**.

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