Therefore to sum things up‚ my hypothesis is when the Independent variable increases so will the dependant variable. Independent variable: - Surface area of potato Dependant variable: - Gas Controlled variable: - Equal size of potatoes used - Using measuring cylinder Equipment used: - Gas collecting kit - Potato - Stop watch - Test tube - Distilled water - Hydrogen peroxide - Knife Safety precautions: Dealing with corrosive chemicals “hydrogen peroxide” Method 1. Cut potatoes
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Enzymes and their importance in plants and animals (25 marks) Enzymes are biological catalysts‚ which accelerate the speed of chemical reactions in the body without being used up or changed in the process. Animals and plants contain enzymes which help break down fats‚ carbohydrates and proteins into smaller molecules the cells can use to get energy and carry out the processes that allow the plant or animal to survive. Without enzymes‚ most physiological processes would not take place. Hundreds of
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Effect of Temperature on Enzymes ~Abstract~ In this experiment the effect of different types of temperatures on enzyme activity was examined. The temperature baths that were used to test the difference in enzyme activity on fresh liver were; 4 °C‚ room temperature which was 22°C‚ body temperature which is 37°C‚ and 77°C. The total time of each trial was 2 and a half minute‚ 1 minute for the H2O2 to acclimatize to the temperature‚ 1 and a half minutes for the reaction to occur. Catalase causes Hydrogen
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It was in August 1998 that the first chinks in the Kinetic Honda Motors Ltd. (Kinetic Honda) armor were reported by Business India. Both Honda and the Firodias of Kinetic were quick to deny rumors of a split‚ though reports of the Firodias quietly raising resources to buy out Honda’s stake kept surfacing. The Firodias were even reported to have securitised the assets of their two-wheeler finance company - 20th Century Kinetic Finance (TCKF) - to raise this money. Trouble had been brewing since
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Effect of temperature on enzyme activity In this experiment… Independent variable: Temperature of the amylase Dependent variable: Enzyme activity which is measured by the time for disappearance of starch Controlled variables: Volume of amylase; volume of starch solution; concentration of amylase; concentration of starch solution Prediction of results i) At low temperature‚ the rate of amylase activity is very low. ii) At optimum (=best) temperature‚ the rate of amylase activity is the
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and Virology. The objective of my thesis was to produce and characterize thermostable β-Galactosidase enzyme‚ which has been explored in various biotechnological‚ industrial‚ medical and analytical applications. The focus of research was not only limited to thermo stability of β-Galactosidase‚ but also to the production of large amount of enzyme in a short period of time. The β-Galactosidase enzyme hydrolyzes lactose into galactooligosaccharides‚ which are suitable for lactose-intolerant people and
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correlation between catalase concentration and the rate of reaction. This occurs because as the enzyme concentration increases‚ there are more enzymes available to catalyze substrates. More enzymes means more reactions can take place at a time‚ thus a faster rate of reaction. Overall‚ based on the results of table 2.0 and graph 2.0‚ it is prevalent that there is a positive correlation between the concentration of enzymes and the rate of
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Biology Enzyme Catalase Investigation Aim: The aim of this investigation is to study and observe whether or not the concentration of hydrogen peroxide (varying from 10 – 30 millilitres) affects the rate of reaction. Hypothesis: With the increase of the concentration of Hydrogen Peroxide 3% substrate‚ I prediction that the rate of pressure increase will begin to amplify. The pressure is bound to increase because the catalase quickly reacts with the hydrogen peroxide; this is why the more substrate
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FE 106 GENERAL CHEMISTRY EXPERIMENT-3 CHEMICAL KINETICS PREPARED BY BURAK COBAN PURPOSE: In this experiment we will study the rate of decomposition of hydrogen peroxide to form oxygen according to the net equation: 2H2O2 (aq) 2H2O(l) + O2 by measuring the rate at which oxygen evolved‚ we will investigate how the rate changes with varying initial concentrations of hydrogen peroxide and iodide
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Experiment 16: Kinetics: The Iodine Clock Jane Smith Purpose: The objective of this experiment was for students to apply their knowledge of kinetics and rate laws in order to determine the rate of a chemical reactions‚ activation energy‚ and frequency factors of those reactions. Specifically‚ this experiment was performed using a series of solutions with varying concentrations of KI‚ Na2S2O3‚ and (NH4)2S2O3 . Students recorded time elapsed to observe physical evidence of a reaction taking place
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