Streptomycin is effentive against bacteria

Options

A. Gram (+)
B. Gram (-)
C. Gram netral
D. Both Gram (+) and Gram(-).

Answer

**Step-by-Step Solution:**

1. **Understanding Streptomycin**: Begin by recognizing that streptomycin is an antibiotic, which means it is a substance used to kill or inhibit the growth of bacteria.

2. **Classification of Antibiotics**: Identify that streptomycin belongs to the aminoglycoside class of antibiotics. This classification is important as it gives insight into its mechanism of action and effectiveness.

3. **Broad Spectrum Antibiotic**: Acknowledge that streptomycin is classified as a broad-spectrum antibiotic. This means it can target a wide range of bacteria rather than being effective against only a specific type.

4. **Effectiveness Against Bacteria**: Confirm that streptomycin is effective against both gram-positive and gram-negative bacteria. This is a crucial point as it determines the range of infections that can be treated with this antibiotic.

5. **Examples of Infections Treated**: Note that streptomycin is used in the treatment of various bacterial infections, including tuberculosis, endocarditis, plague, and rat-bite fever. This reinforces its importance in medical treatments.

6. **Evaluating the Options**: Analyze the provided options:
- Option 1: Gram positive – Incorrect
- Option 2: Gram negative – Incorrect
- Option 3: Gram neutral – Incorrect
- Option 4: Gram positive and gram negative both – Correct

7. **Conclusion**: Based on the analysis, the correct answer is that streptomycin is effective against both gram-positive and gram-negative bacteria.

**Final Answer**: The correct option is **4. Gram positive and gram negative both**.

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