sample
Haven't found the Essay You Want?
For Only $12.90/page

Catalysis Essay Topics & Paper Examples

The effect temperature has on the activity of the enzyme

Enzymes are a biological catalysts, which means that they speed up the chemical reactions in living organisms. Almost all of enzymes are energized protein molecules that catalyse and regulate nearly all biochemical reactions that occur within the human body. The reason in which enzymes are sensitive to heat, pH and heavy metal ions is because they are made up of proteins. The food we eat is turned into energy by enzymes and then this energy is unlocked for use in the body. Enzymes have a range of molecular weights from 12000 to more than 1 million. The amino acid side chains on some of the enzymes are only used for activity while cofactors utilize additional chemical components. Enzymes work best…

Effect of decreasing the concentration of 95% solution of ethanol on the volume of oxygen gas collected through the reaction of hydrogen peroxide and catalase

The purpose of this lab was to test if ethanol affects the reaction involving hydrogen peroxide and catalase. Tests were performed by putting chicken liver, ethanol solution (diluted ethanol solution for other trials) and hydrogen peroxide in a test tube with a side arm, and having a rubber tube lead the oxygen gas into a gas collection tube. Results from the tests showed a negative correlation, this means that the more diluted the solution of 95% ethanol was, the less oxygen gas collected. Controlling a number of factors which include human error, temperature change, pH levels, substrate concentrations and ensuring a controlled experimental environment will work to increase the accuracy of the experiment. Purpose/Hypothesis If the concentration of the 95%…

Aristo Book 5 experiment answer

HKDSE CHEMISTRY – A Modern View (Chemistry) Experiment Workbook 5 Suggested answers Chapter 52 Importance of industrial processes Chapter 53 Rate equation Experiment 53.1 Determining the rate equation of a reaction using method of initial rate (A microscale experiment) 1 Chapter 54 Activation energy Experiment 54.1 Determining the activation energy of a chemical reaction 3 Chapter 55 Catalysis and industrial processes Experiment 55.1 Investigating the action of a catalyst 6 Experiment 55.2 Investigating homogeneous catalysis 8 Experiment 55.3Investigating ways to change the rate of a reaction with a suitable catalyst 9 Experiment 55.3 Sample laboratory report 13 Experiment 55.4Preparing ethanol by fermentation 16 Chapter 56 Industrial processes Chapter 57 Green chemistry for industrial processes Chapter 53Rate equation Experiment 53.1Determining the…

Scientific Methodology & Enzyme Activity

Laboratory 2: Scientific Methodology & Enzyme Activity Objective: The purpose of this experiment was to simply measure oxygen production rates released from decomposed hydrogen peroxide under different conditions (concentration of enzymes, temperature, and PH level). Hypothesis: Part a: If different amounts of enzyme solution are added to the hydrogen peroxide, then the highest amount of enzymes will have the greatest reaction rate because enzymes catalyze reactions, meaning more oxygen will be produced quicker. Part b: If different temperatures are used to catalyze enzyme activity, then the lowest temperature would produce the quickest reaction rate because enzymes can become denaturized at higher temperatures Part c: If different amounts of pH are used to catalyze the reaction, then the concentration with pH…

The Effect of pH on Enzymatic Reaction Rate

Abstract Enzymes are affected by changes in pH. The most favorable pH value— the point where the enzyme is most active—is known as the optimum pH. This experiment was conducted to determine the effect of pH reaction rate on an enzyme, catalase, from yeast. The experimental results indicate that the catalase worked best at a neutral pH level of seven (7). Introduction An enzyme is a protein molecule that serves as a catalyst. “The basic function of an enzyme is to increase the rate of a reaction; most cellular reactions occur about a million times faster than they would in the absence of an enzyme” (Ophart, 2003). The enzyme is not changed by the reaction because the enzyme temporarily binds…

Enzyme Lab Report

Enzymes are proteins produced by living cells that act as catalysts, which affect the rate of a biochemical reaction. They allow these complex biochemical reactions to occur at a relatively low temperature and with less energy usage. In enzyme-catalyzed reactions, a substrate, the substance to be acted upon, binds to the active site on an enzyme to form the desired product. Each active site on the enzyme is unique to the substrate it will bind with causing each to have an individual three-dimensional structure. This reaction is reversible and is shown as following: E + S—-ES—- E + P Enzymes are recyclable and unchanged during the reaction. The active site is the only part of the enzyme that reacts with…

Effect of Temperature on Lipase

Theory The higher the substrate concentration the more quickly product is produced (rate of reaction increases) until enzyme saturation is reached at which time more substrate has no further effect. Enzymes such as Catalase are protein molecules which are found in living cells. They are used to speed up specific reactions in the cells. They are all very specific as each enzyme just performs one particular reaction. Catalase is an enzyme found in food such as potato and liver. It is used for removing Hydrogen Peroxide from the cells. Hydrogen Peroxide is the poisonous by-product of metabolism. Catalase speeds up the decomposition of Hydrogen Peroxide into water and oxygen as shown in the equations below. It is able to speed…