23. What is the action
mechanism of the antibiotic
penicillin?

Gap-fill exercise

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, discovered by the Scottish
doctor Alexander in 1928, is a
drug that inhibits enzymes necessary
for the synthesis of peptidoglycans, a
constituent of the cell wall.
With the inhibition the bacterial
population stops growing because there
is no new cell formation.

Fleming won the Nobel prize in Medicine
for the discovery of penicillin.