Question

why many antibiotic s like penicilliun do not work against human

Answer 1

Antibiotics cannot kill viruses because bacteria and viruses have different mechanisms and machinery to survive and replicate. The antibiotic has no “target” to attack in a virus. However, antiviral medications and vaccines are specific for viruses.

Answer 2

Actually , human cells do not have cell walls, while many types of bacteria do. The antibiotic penicillin works by keeping a bacterium ...