Earth is a planet, Zero planets on earth
Enzymes help speed up chemical reactions in the human body. They bind to molecules and alter them in specific ways. They are essential for respiration, digesting food, muscle and nerve function, among thousands of other roles.
Chromosomes that they give you.
Because we now know that antibiotics can only treat bacterial infections. this includes strep throat and other things such as urinary infections. They won't treat viruses. You can treat the symptoms, but you can not treat the virus.
(Your doctor will also give you a prescription to prevent infection.)