Which of the following statements are incorrect about penicillin ?

Options

A. An abtibacterial fungus
B. Ampicillin is its synthetic modification
C. It has bacteriostatic effect
D. It is a broad spectrum antibiotic

Explanation

To determine which statements about penicillin are incorrect, let's analyze each statement provided in the question step by step.

### Step-by-Step Solution:

1. **Identify the Source of Penicillin**:
- Penicillin is derived from a specific type of fungi known as *Penicillium*.
- **Statement**: "Penicillin is derived from fungi."
- **Evaluation**: This statement is correct.

2. **Understand the Modifications of Penicillin**:
- Amoxicillin and Ampicillin are synthetic modifications of penicillin.
- **Statement**: "Amoxicillin and Ampicillin are synthetic modifications of Penicillin."
- **Evaluation**: This statement is correct.

3. **Determine the Mechanism of Action**:
- Penicillin works by destroying the cell wall of bacteria, which makes it bactericidal (kills bacteria).
- **Statement**: "Penicillin has a bacteriostatic effect."
- **Evaluation**: This statement is incorrect because penicillin is bactericidal, not bacteriostatic.

4. **Assess the Spectrum of Activity**:
- Penicillin is generally considered a narrow-spectrum antibiotic, meaning it is effective against a limited range of bacteria. However, when combined with other antibiotics, it can have a broader spectrum of activity.
- **Statement**: "Penicillin is a broad-spectrum antibiotic."
- **Evaluation**: This statement is incorrect because penicillin is primarily narrow-spectrum.

### Conclusion:
The incorrect statements about penicillin are:
- "Penicillin has a bacteriostatic effect." (Incorrect)
- "Penicillin is a broad-spectrum antibiotic." (Incorrect)

### Final Answer:
The incorrect statements are C and D.

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