What are antibiotics?Give example.

Explanation

Antibiotics:The chemical substances produced by micro organisms and inhibit the growth or destroy microoraganisms are called antibiotics.
(Or)
The substance produced totally or partly by chemical synthesis which in low concentration inhibits the growth (or) destroy microorganism by intervening in their metabolic process are called antibiotics.E.g:Penicillin,Chloramphenicol etc.