Enzymes to speed up chemical reactions as does adding heat. how, specifically (4 ways) do enzymes speed up reactions and why are they more appropriate than heat in living systems?

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen