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Methicillin was a semisynthetic penicillin designed to resist inactivation by:

ABeta-lactations
BBeta-latitudes
CBeta-lactamases
DBeta-lactometers
Answer & Solution
Correct answer: C. Beta-lactamases
1. Bacteria destroy ordinary penicillins with an enzyme. 2. Methicillin was built to survive that enzyme. 3. Those enzymes are beta-lactamases. _Source: OpenStax Microbiology, Chapter 14, Antimicrobial Drugs._
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