Which of the following best explains how enzymes speed up a chemical reaction? enzymes question 3 options: can add heat to a chemical reaction. remove heat from a chemical reaction. lower the activation energy of a chemical reaction. are not changed as a result of a chemical reaction.

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half