MDCAT Biology MCQ #1691

A bacterial strain survives exposure to penicillin by producing an enzyme that degrades the drug. This resistance gene is typically located on which structure?

MDCAT Biology MCQ #1691

  1. Question 1

    Q1. A bacterial strain survives exposure to penicillin by producing an enzyme that degrades the drug. This resistance gene is typically located on which structure?

    • A) Mesosomes
    • B) Nucleoid DNA
    • C) Ribosomes
    • D) Plasmids

    Answer: Plasmids

    Explanation: Plasmids carry extra-chromosomal genes like antibiotic resistance. Mesosomes are tempting but they are involved in respiration and DNA replication.