Question

Which one of the following has the ability to inhibit transcription?

• A. Neomycin
• B. Kanamycin
• C. Rifampicin
• D. Quinolones

Hint:

Rifampicin inhibits RNA polymerase, preventing transcription in prokaryotic cells.

Answer 1

The Correct Option is C

Step 1: Understanding the Role of Antibiotics 
- Neomycin and Kanamycin inhibit protein synthesis by targeting the ribosome. 
- Rifampicin inhibits transcription by binding to RNA polymerase and preventing RNA synthesis. 
- Quinolones inhibit DNA replication by interfering with DNA gyrase but do not directly affect transcription. 
Step 2: Conclusion 
Rifampicin specifically inhibits transcription.