Which antibiotic would be a good choice to use as a research tool if investigating the role of DNA gyrase in a cell?
A) coumermycin
B) penicillin
C) tetracycline
D) bacitracin

Question

Quizplus · Accepted Answer

DNA gyrase is a bacterial enzyme involved in DNA replication and transcription. Coumermycin is a selective inhibitor of DNA gyrase and thus would be a good choice to use as a research tool for investigating the role of DNA gyrase in a cell. The other antibiotics listed (penicillin, tetracycline, and bacitracin) work via different mechanisms and would not be as effective for this specific purpose.

Which Antibiotic Would Be a Good Choice to Use as a Research