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CATALASE AND HYDROGENPEROXIDE Enzymes are biological catalysts which means it is produced organically made by the cells it's a molecules made up of protein which are synthesized by the cell to perform very specific functions. Enzymes are an important part of life due to the fact that they regulate chemical reactions within the body. Enzymes control the rate and direction of the reaction they also speed up chemical reactions allowing them to occur more easily this occurs in four different ways, one way is heat, another is increasing the rate of reactants, the third way is decreasing the amount of products and the fourth way is enzymes, which speed up reaction without themselves being used up. Without them we would not be alive because they are involved in digestion, respiration, reproduction, vision, movement, thought, and also in the productions of other enzymes. Simple cells may have as many as 2000 enzymes with each one catalyzing a different reaction. An enzyme can speed up a reaction making it 10, 000,000,000 times faster. All enzymes are made of protein; that is why they are sensitive to heat, pH and heavy metal ions. . Copper ions are poisonous: if you get copper ions in your blood they will block up some of the important enzymes in red and white blood cells. ...read more.


He put forward the Induced Fit Theory. This states that instead of an enzyme having a compliment shape of active site, the active site is able to grab the molecule and fit around it: As the enzyme takes in the substrate, the chemical bonds can weaken in the substrate, helping the reaction to go on. Like the lock and key model, each enzyme catalyzes a reaction only with certain substrates. It is said that both types of reaction occur in the body. Catalase is an enzyme which makes another hydrogen peroxide undergoes a chemical change without the enzyme chemically changing. Therefore a catalase can be used many times. Without catalysts chemical reactions would take much longer that the average human life expectancy. So that would mean that in 76 years only a couple chemical reactions would take place. Since our bodies have enzymes hundreds of chemical reactions occur in a day. If our bodies didn't have catalysts our body cells couldn't function. All reactions take energy to get them started. This energy is called the activation energy. Enzymes catalyse reactions inside organisms, because they speed up the rate of reaction it is said that enzymes lower the activation energy of the reaction, it lowers the amount of effort needed to get the reaction going. ...read more.


The more water and oxygen produced, the less hydrogen peroxide is left to react. The concentration of hydrogen peroxide in the solution then decreases, and the reaction slows down. The reaction slows down, because the concentration of hydrogen peroxide in the solution is lower. Hydrogen Peroxide---------------------->Water + Oxygen 2H2O2 ------------------------> 2H2O + O2. If the temperature is too low the enzyme molecules will not have enough energy to collide with the hydrogen peroxide molecules, so the reaction will not carry on. As the temperature gets hotter, the rate of reaction will then increase as the molecules have more energy. One way to measure the rate of a reaction, is to measure the amount of product being produced. In this case, the products are water and oxygen, but in this case oxygen will be measured and time would be in seconds. The substrate and the catalase are always on the move so there is a big chance that they will collide forming the enzyme substrate complex; this is catalase-hydrogen peroxide complex. When the hydrogen peroxide fits into the catalase's active site, enzyme + product which are enzyme-oxygen & water complex is made this are Enzyme-product complex which is catalase + water & oxygen. ?? ?? ?? ?? Elizabeth Oluwajuwa Adeniran Catalase and Hydrogen Peroxide ...read more.

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