Question

whatisantibioticandwritefiveadvantage

Answer 1

Why It's Harmful to Overuse Them. Taking antibiotics for colds and other viral illnesses not only won't work, but it can also have dangerous side effects — over time, this practice actually helps create bacteria that are harder to kill. ... This is called bacterial resistance or antibiotic resistance.

Answer 2

Antibiotics   are the medicines which inhibit the growth of bacteria and kill them. Antibiotics act   by blocking certain biochemical pathways which are essential for the survival of bacteria like cell wall formation, protein synthesis etc.
 For example: Penicillin is an antibiotic. It blocks the formation of cell wall in bacteria, which makes bacteria weak and ultimately results in death of bacteria.

 Other examples are:- Cephalosporin,Tetracycline ,Cephalolsporins,Bacitracin

Uses: Antibiotics are used to treat many bacterial infections like typhoid etc