Enzymes are biological catalysts. A catalyst is a substance that modifies and increases the rate of a reaction of another substance without being consumed in the process. In this case, and enzyme acts as that catalyst on certain other substances. The substance it reacts with is determined by its chemical structure. There are two certain factors that relate to an enzymes chemical structure. ... tube will be placed in different temperature water baths. The first tube will be placed in an ice bath that should maintain a temperature of 30F. Another tube should be kept at a constant 70F water bat...

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