Chemical Reaction Lab Report

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Recommended: Importance of enzymes in biology

Enzymes are proteins that consist of a long chain of different amino acids that increase the rate of chemical reactions by lowering activation energy. (Bbc, 2016) Activation energy is the minimum amount of energy required to activate molecules to undergo a chemical reaction, so lowering the activation energy enhances the chemical reaction, allowing it to occur faster and more often. (Encyclopedia Britannica, 2016) Chemical reactions happen within cells, with molecules called substrates. (Live Science, 2016) Two molecules must collide at the same time, with the right orientation and sufficient energy in order for the chemical reaction to occur. (Rsc, 2016) Once together the enzyme and substrates bind at the active site and the chemical reaction …show more content…

From this result it can be assumed that the moment the milk enters the stomach, inside the human body, the chemical reaction will take place, immediately turning the milk fats into fatty acids, which can then be absorb by the body. This assumption is not certain as the quantity of milk used in the experiment is far less than a human would drink in one day and is therefore hard to relate how fast it would actually happen in side a human. Also the milk would be mixed with other liquids in the body which may take more time for this chemical reaction to …show more content…

At this temperature enzymes begin to denature decreasing the rate of reaction rapidly (Bbc, 2016) but this theory is not supported by experiment 2. The highest temperature the milk was warmed to was 60oc, which in theory should have denatured the enzyme, causing it to break down. According to BBC (2016) “Increasing the temperature to 60°C will cause a permanent change to the shape of the active site. This is why enzymes stop working when they are heated,” but as seem in graph 2 the reaction continued as normal, with the enzyme unaffected. The reason behind this is that the lipase is an industrial enzyme. These enzymes are used in the chemical industry when extremely specific catalysts are required. Industrial enzymes are not found in the human body and generally have a higher denaturing temperature, which explains the usual results in experiment two. (Boundless,

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