Multiple choice

Which one of the following does not grow on artificial media?

  1. Escherichia coli

  2. Rickettsias, chlamydias, Treponema pallidum

  3. Neisseria gonorrhoeae

  4. Mycobacterium leprae

  5. Both (2) and (4)

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Correct. Rickettsias, Chlamydias (obligate intracellular pathogens) and Treponema pallidum do not grow on artificial media and Mycobacterium leprae is grown in armadillos because of its low temperature.