The sugar molecule lactose is found in milk products and must be broken down to be properly digested. People who are lactose intolerant do not naturally produce the enzyme lactase. What role does this enzyme play? A) Enzymes act as structural components (parts) of the cell
B) Enzymes catalyze chemical reactions to break down the lactose molecules
C) Enzymes slow down chemical reactions to break down the lactose molecules
D) Enzymes act as long term energy storage molecules and provide energy to the organism when broken down