Which of the following statements are incorrect about penicillin?

Options

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

Answer

To determine which statements about penicillin are incorrect, we need to analyze each statement provided in the question.

1. **Penicillin is an antibacterial fungus.**
- This statement is incorrect. Penicillin is not a fungus itself; rather, it is an antibiotic that is derived from the Penicillium fungus. Therefore, while it has antibacterial properties, it is not classified as an antibacterial fungus.

2. **Penicillin is its synthetic modification.**
- This statement is also incorrect. While there are synthetic derivatives of penicillin (like amoxicillin), penicillin itself is a natural product derived from the Penicillium mold. Thus, stating that penicillin is a synthetic modification is misleading.

3. **Penicillin has a bacteriostatic effect.**
- This statement is incorrect. Penicillin is primarily a bactericidal antibiotic, meaning it kills bacteria rather than just inhibiting their growth. Bacteriostatic antibiotics prevent bacteria from multiplying but do not kill them.

4. **Penicillin is a broad-spectrum antibiotic.**
- This statement is incorrect as well. Penicillin is generally considered a narrow-spectrum antibiotic because it is effective mainly against specific types of bacteria, particularly Gram-positive bacteria, and is not effective against all types of bacteria.

### Summary of Incorrect Statements:
- Statement 1: Incorrect (Penicillin is derived from a fungus, not an antibacterial fungus itself)
- Statement 2: Incorrect (Penicillin is a natural product, not a synthetic modification)
- Statement 3: Incorrect (Penicillin is bactericidal, not bacteriostatic)
- Statement 4: Incorrect (Penicillin is a narrow-spectrum antibiotic, not broad-spectrum)