Why are penicillins often more effective against gram-positive bacteria than gram-negative bacteria?

Gram-positive microscopic organisms have a peptidoglycan layer on the exterior of the cell divider. Gram-negative microbes have peptidoglycan between layers. Penicillin works best on gram-positive microbes by restraining peptidoglycan generation, making the cells cracked and delicate.

Explanation:

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clean the wound to make sure of no infections.