Which of the following is not a cephalosporin?

Prepare for the KMK Live Session General Pharmacy Test. Use flashcards and multiple-choice questions with hints and explanations for each question. Get ready for your exam with confidence!

Multiple Choice

Which of the following is not a cephalosporin?

Explanation:
Natamycin stands out because cephalosporins are beta-lactam antibiotics that disrupt bacterial cell wall synthesis. Natamycin, on the other hand, is an antifungal polyene that binds ergosterol in fungal membranes to create pores—this mechanism is unrelated to beta-lactams and it isn’t a cephalosporin. The other three are cephalosporins and are used to treat bacterial infections.

Natamycin stands out because cephalosporins are beta-lactam antibiotics that disrupt bacterial cell wall synthesis. Natamycin, on the other hand, is an antifungal polyene that binds ergosterol in fungal membranes to create pores—this mechanism is unrelated to beta-lactams and it isn’t a cephalosporin. The other three are cephalosporins and are used to treat bacterial infections.

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