Microbiology Mycoplasmas differ from chlamydiae in that they are A Susceptible to penicillin B Able to grow on artificial cell-free media C Able to cause urinary tract infection D Able to stain well with Gram's stain 💡 Explanation Mycoplasmas differ from chlamydiae in that they are ✓ Correct Answer: B. Able to grow on artificial cell-free media