Which bacterial genus lacks a cell wall and is therefore naturally resistant to penicillin?
Correct answer: A. Mycoplasma
- A. Mycoplasma
- B. Corynebacterium
- C. Bordetella
- D. Erysipelothrix
Explanation
Mycoplasma species lack the peptidoglycan cell wall targeted by penicillin and related beta-lactam drugs. The other listed genera possess bacterial cell walls and are not intrinsically resistant for this reason.
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About Veterinary Microbiology and Immunology
Covers the structure, classification, growth and transmission of bacteria, viruses, fungi and other disease causing microorganisms in animals. It explains innate and acquired immunity, antibodies, antigens, vaccination, hypersensitivity and diagnostic methods, while distinguishing infectious agents from the immune responses they produce.
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