What happens when you add hydrogen peroxide to liver and why?

What would happen to our cells if they made a poisonous chemical? You might think that they would die. In fact, our cells are always making poisonous chemicals. They do not die because our cells use enzymes to break down these poisonous chemicals into harmless substances. Enzymes are proteins that speed up the rate of reactions that would otherwise happen more slowly. The enzyme is not altered by the reaction. You have hundreds of different enzymes in each of your cells. Each of these enzymes is responsible for one particular reaction that occurs in the cell. In this lab, I am studying an enzyme that is found in the cells of many living tissues. The name of the enzyme is catalase; it speeds up a reaction, which breaks down hydrogen peroxide, a toxic chemical, into two harmless substances--water and oxygen. The reaction is as follows: 2H2O2 ----> 2H2O + O2 therefore there are enzymes in liver too