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MCAT Question A Day - 6/1/14 - Answer!

Penicillin interferes with peptidoglycan formation. Penicillin most likely inhibits bacterial growth by disrupting the production of:

A.  bacterial plasma membranes
B.  prokaryotic cell walls
C.  the bacterial nucleus
D.  bacterial ribosomes

B is correct. Bacterial plasma membranes are a phospholipid bilayer. Bacteria do not have a nucleus. Ribosomedo not contain peptidoglycans. Bacterial cell walls are made from peptidoglycan.

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