This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Ureaplasma is naturally resistant to - 
Select and explain. 
A. Erythromycin, B. Tetracycline, C. Chloramphenicol, D. Cephalosporins
D: Cephalosporins
Answer: D: Cephalosporins 
Explanation: As there is lack of peptidoglycan layer, hence Ureoplasma is naturally resistant to all beta lactams