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Science Lab

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Submitted By cindy89
Words 1757
Pages 8
Cindy Rodriguez
Professor. Mascarano
Biology Lab
Fall 2014

Determining the properties of an enzyme

Abstract:

To determine the properties of an enzyme, a peroxidase, turnip extract is used in this experiment
Enzymes are large proteins that are responsible for the speed at which chemical reactions they are involved in taking place. Enzymes speed up chemical reactions by lowering the activation energy of a reaction, the amount of energy necessary to trigger a reaction .Using Peroxidase ,Turnip extract which is expermitnatal easy to prepare and examime that is This experiment determines the effects that concentration temperature, ph, boiling have on an enzymes ability to perform its work. It is hypothesized that none of these variables will have any effect on the activity of the enzyme.

Introduction : This expermient with present various temperates and ph levels to be teste in order to determine the properties of an enzyme. An enzyme is a protein that acts as a catalyst, that changes the rate of a reaction with no help of energy. Enzymes lower the activation energy of a reaction the amount of energy necessary to trigger a reaction. Most enzymes are proteins that have a unique shapes which are determined by their amino acid sequences.The shape of the enzyme called the active site determines its catalytic effects. The active site of each type of a unique shape that allows the enzyme to bind with only certain kinds of enzymes called the substrate. Smaller molecules are called cofactors or coenzymes.The binding between enzyme and substrate consist of weak non covalent chemical bonds forming an enzyme substrate complex that exist for only microseconds. During this instant the covalent bonds of the substrate either come under stress or are oriented in such a manner that they can be attacked by other molecules The result is a

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