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Question

Which among the following is the narrow-spectrum antibiotic?


A

Penicillin G

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B

Ampicillin

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C

Amoxycillin

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D

Chloramphenicol

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Solution

The correct option is A

Penicillin G


The correct option is A.

Explanation of the correct option:

  1. The narrow-spectrum antibiotic means the antibiotic that only kills bad, pathogenic bacteria and lets good bacteria undisturbed.
  2. Penicillin G is a medicine used for oral medication and against susceptible bacterial diseases.
  3. It only destroys targeted bad bacteria and penicillin-resistant bacteria still live.
  4. It is a narrow-spectrum antibiotic.

Explanation of the incorrect answers:

Option B:

Ampicillin is a broad-spectrum antibiotic that can destroy both gram-positive and gram-negative bacteria.

Option C:

Amoxicillin is a moderate-spectrum antibiotic against respiratory tract disease.

Option D:

Chloramphenicol is a broad-spectrum antibiotic against ocular disease.

Final answer:

Penicillin G is a narrow-spectrum antibiotic.


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