Enzymes are biological catalysts‚ large protein proteins that have a very specific three-dimensional shape which makes them highly specific and only work on one or a few similar chemical reactions. Enzymes themselves are not consumed in the reaction‚ but they help attract substrates into correct position to undergo chemical reaction. Enzymes greatly speed up the rate of biological reactions by lowering the energy of activation. To get a sense of the speed and efficiency of enzymes‚ substrates can
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3.8.3. Effect of temperature of the reaction: The effect of the temperature of the reaction on the activity of the purified enzyme was carried out by make the enzymatic reaction for 10 minutes at different temperature 25‚30‚35‚40‚45‚50‚60 and 70°C using an enzyme protein 0.1mg/reaction mixture and substrate concentration of 15 mg/reaction mixture‚ using a control of previously heated enzyme solution in the reaction. The data recorded in (table 27) and (figure 29) illustrate the effect of temperature
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Enzymes are important components of life‚ facilitating reactions that are necessary for an organism to live. Enzymes can be very specific to what environment they function best in1. Numerous environmental impacts were tested for the enzyme peroxidase which catalyzes the decomposition of hydrogen peroxide. The basic decomposition reaction was carried out first without any environmental alterations. The hypothesis for this reaction was supported. The enzyme caused the amount of absorbance increase
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Hideout In Geylang Ah Ngow : I’m sorry Lou Foo. I should not have killed you. Chin: Can I be released now? I know that you are a good guy. Ah Ngow: Alright‚ but you better don’t report this to the police. ( unties the rope on Chin) Chin : I wont. Policewoman : Stop right there! Ah Ngow and Chin: Frozed Ah Ngow : Quickly grabs Chin and place a knife at his neck. Chin : What are you doing? ( surprised) An Ngow : Don’t worry. I wont kill you. It’s a trap for the police.( whispering in his
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when the diluted concentration of caffeine was put in compared to the control group that contained no concentration of caffeine. The hypothesis was supported because a significant decrease of the total number of cells when caffeine solution was added to the experimental group was clearly shown. An addition of small amounts of caffeine does inhibit cell proliferation and affect cell viability during the lab experimentation one more test was conducted because the first experiment was done with a much
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An experiment to investigate the effect of temperature on the rate of reaction of the Enzyme Trypsin. Aim: This investigation was on the effect temperature has on the rate that the enzyme trypsin hydrolyses its substrate‚ a protein found in milk (casein). This investigation was conducted under controlled conditions‚ the temperature being the changeable variable. Trypsin and its substrate (powdered milk which is a source of the protein casein) were heated in a water bath. The contents of the two
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ABSTRACT Enzymes are biological catalysts; they cause reactions to happen that would not normally occur due to the activation energy that would be required. They bring together substrates and cause chemical reactions that are essential for life. Without enzymes life processes‚ and life in of itself‚ would not be possible. Enzymes are also special because very little of the actual enzyme is actually used up in the reaction. In this lab two different factors‚ temperature and pH‚ were tested to see
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showing the titration of potassium hydrogen tartrate solution with NaOH; Procedure : (1) Weigh out ~2.0g of finely powdered potassium hydrogen tartrate into 250.mL beaker. (2) Add 150.mL of distilled water and stir well. (3) Using a vacuum filtration‚ filter the solution into a clean‚ dry Erlenmeyer flask with a side arm. (4) Record the temperature of the filtrate. (5) Pipet out 25 mL of (4) into a 250.mL Erlenmeyer flask. (6) Put ~3 drops of phenolphthalein indicator to (5) (7) Prepare
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The Effect of Temperature on the Enzyme Catalase Stephen Francis Biology 183 Abstract This experiment was performed to determine the resultant effect of temperature change on the reaction between the enzyme catalase and hydrogen peroxide. This experiment was performed by measuring and comparing the amount of oxygen bubbles produced and the absorbance of the catalase and hydrogen peroxide solution over time at room temperature‚ 2°C‚ 50°C‚ and 60°C. The overall result of this experiment proved
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The environmental factors that effected the rate of enzyme reactions were the enzyme concentration‚ pH‚ and temperature. These environmental factors help enzymes break down the poisonous chemicals into harmless substance. When we tested the liver with 2ml of hydrogen peroxide for a normal reaction it showed that it was exothermic. We added more hydrogen peroxide and the reaction rate of the liver was 3. We learned that the catalase is reusable because the liver reacted both times when we put in
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