Complement is the name used to describe a group of protein enzymes normally present, but in an inactive state, in blood. when activated, they are specialized protein molecules that target foreign cells, such as bacteria, for destruction. how do complement protein enzymes destroy harmful cells?
a. "drilling" a hole in the cell membrane
b. causing sodium to rapidly rush out of the cell
c. causing water to rapidly rush out of the cell
d. phagocytosis