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A penicillin is a member of a family of ...

A penicillin is a member of a family of drugs that have a

A

four membered cyclic amide fused to a five membered thiazole ring

B

three membered cyclic amide fused to a five-membered thiazole ring

C

four-membered cyclic amide fused to have a four membered thiazole ring.

D

five -membered cyclic amide fused to have a five membered thiazole ring.

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The correct Answer is:
A
A penicillin is a member of a family of drugs that have a four membered cyclic amide fused to a five membered thiazole ring. It is narrow spectrum antibiotic.
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