The equation of the reaction observed is:
2H2O2 (aq) → 2H2O (l) + O2 (g)

The organelle involved in this experiment is peroxisomes. These small, membrane-enclosed, single membrane was found in plant cell and animal cell. The organelle contain variety of enzymes which involved in different metabolic reaction. Peroximoses were named because of its enzyme contains that usually remove hydrogen atoms from particular organic substrates with molecular oxygen. This oxidative reaction will produce hydrogen peroxide.
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However, during “peroxidative” reaction (H2O2 + R′ H2 → R′ + 2H2O), catalase (an enzyme in peroxisomes) will capitalize on the H2O2 produced by other enzymes in the organelle, in order to oxidize other substrates such as phenols, formic acid, formaldehyde, and alcohol. These reaction were quite important in kidney and liver cells, because the peroxisomes responsible to detoxify different toxic molecules that enter the bloodstream. In addition, when excess H2O2 was generated in the cell, catalase will converts it to H2O through the reaction:

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Pulping the liver will increase the total surface area of the liver. This means the production rate of catalase has been raised because more particles have been exposed to the other reactant, which lead to a higher rate of collision between the particles of reactants. Thus, there’s a higher chance to gain the activation energy in order to carry out chemical reaction. Rate of reaction increased.

Catalase was a biological catalyst (enzyme) which made of protein and will denature in high temperature due to the breakage of bond between molecule. In this case, boiling the liver will cause the enzyme inside the peroxisomes to be denature. When the enzyme was denature, its active site would be altered. This cause the enzyme malfunction because it couldn’t bind the substrate to carry out reaction. From the