Preview

Enzyme Lab Report

Better Essays
Open Document
Open Document
1548 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Enzyme Lab Report
Abstract The major objective of this experiment was to observe the effects of catalase under varying controlled conditions. The scope of this experiment includes Metabolic processes, such as cellular respiration, and it poisonous byproduct hydrogen peroxide. The methodology includes procedures; multiple variables were tested in specific concentrations; that test the reaction rates of the enzyme catalase over a fixed period of time. The major conclusion was that catalase reacts faster in warm temperatures that are neither freezing nor boiling, catalase performs well in lower concentrations than the substrate, and catalase prefers neutral pH levels around 7.

Introduction Enzymes are proteins that catalyze metabolic reactions vital for the survival and functioning of cells [1]. Without enzymes, metabolic processes would occur at unfeasible rates. Catalase is a naturally occurring enzyme that breaks down hydrogen peroxide into water and oxygen; it is essential to cellular respiration. I asked if enzyme activity was affected when exposed to different conditions, such as temperature, substrate concentration, and pH levels. My first hypothesis is that higher temperatures amplify catalyzation, although too high of a temperature denatures enzymes. My second hypothesis is that smaller concentrations of enzyme in the enzyme to substrate concentration ratios produce higher reactions. The last hypothesis is that enzyme reactions work best at a neutral pH. I observed and recorded the effect of these conditions on catalase. The enzyme catalase is important because it handles the decomposition of approximately half of generated H2O2 in living organisms [2]. It is important for biologists to understand catalase because all cells produce hydrogen peroxide, and its the job of catalase to break it down. This research will help increase the knowledge of enzyme activity in complex environments, and under what conditions the enzyme catalase will perform best.

Materials

You May Also Find These Documents Helpful

  • Better Essays

    Background: The four different activities to the enzyme catalyst lab have similar but different backgrounds. Activity A’s background is to investigate the specific reaction of the decomposition of hydrogen peroxide by the enzyme, catalase. Hydrogen Peroxide decomposes slowly into water and oxygen, and the addition of catalase lowers the activation energy of the reaction until it proceeds to a room temperature. The catalase will is unchanged and is usable for to catalyze the reaction of more hydrogen peroxide. The background of activities A, B, and C is to determine the concentration of H2O2 in a solution. To do this, the concentration of an unknown will be used, such as a solution of 0.1 N, which is normal. When titration is done, 5 mL of acid will go in a beaker. When pH indicator paper is added, the paper will turn yellow if it is an acid and green if the solution is neutral. This is the endpoint of titration. In the activities, 2% potassium permanganate will be used to titrate H2O2. When the H2O2 reacts with the potassium…

    • 2040 Words
    • 9 Pages
    Better Essays
  • Good Essays

    Catalase Lab Report

    • 563 Words
    • 3 Pages

    Enzymes are biological catalysts or assistants that consist of various types of proteins that work to drive the chemical reaction required for a specific action or nutrient. They can either launch a reaction or speed it up. Catalase is a common enzyme found in nearly all living organisms exposed to oxygen. It is a very important enzyme in protecting the cell from oxidative damage by reactive oxygen species (ROS). The catalase used in this experiment will come from five different sources: Spinacia oleracea (Spinach), Brassica oleracea (Broccoli), Solanum tuberosum (Russet Potato), Malus domestica (Apple), and Allium cepa (Onion). The five different catalases from the sources will all be used to catalyze Hydrogen peroxide (H2O2). When hydrogen…

    • 563 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Enzyme Lab Report

    • 492 Words
    • 2 Pages

    The results of our experiment showed the solutions in both tube 1 and tube 2 increasing in absorbency in the first eight minutes but then tube 1 continued to increase while tube 2 began to balance out. Tube 3, our blank, managed to stay at 0nm the entire twenty minutes. From this data, we can conclude that our hypothesis was supported that EDTA had a greater change in absorption over PTU.…

    • 492 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Enzyme Lab Report

    • 524 Words
    • 3 Pages

    Prediction: As the temperature increases the rate of enzyme activity will also increase, thus increasing the rate of reaction. However, if the temperature is too high the enzyme will denature.…

    • 524 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Enzyme Lab Report

    • 1060 Words
    • 5 Pages

    Problem: How can we demonstrate how enzymes work? What happens if we alter the environment of an enzyme?…

    • 1060 Words
    • 5 Pages
    Good Essays
  • Powerful Essays

    The purpose of this lab was to observe and to record the activity of the enzyme catecholase in different pH levels as well as its effectivity in different concentration levels.…

    • 1267 Words
    • 6 Pages
    Powerful Essays
  • Powerful Essays

    Catalase Lab

    • 1486 Words
    • 6 Pages

    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.…

    • 1486 Words
    • 6 Pages
    Powerful Essays
  • Good Essays

    Enzyme Lab

    • 1242 Words
    • 6 Pages

    Title: The Effect of Adjusted Concentration of Hydrogen Peroxide on the change in reaction rate of liver catalase.…

    • 1242 Words
    • 6 Pages
    Good Essays
  • Good Essays

    Enzyme Lab Report

    • 1528 Words
    • 5 Pages

    speeds the breakdown of hydrogen peroxide, a toxic chemical produced by cells in the body, into water and…

    • 1528 Words
    • 5 Pages
    Good Essays
  • Better Essays

    In this experiment we tested the effects of the environmental parameter pH on peroxidase activity. We performed this experiment to observe and analyze the effect pH has on peroxidase activity and find the optimal pH level for peroxidase, as well as the ceasing point in the reaction. Parameters are characteristics that can alter an experiment. The parameter we used in this experiment was pH. The pH scale ranges from levels 0 to 14, 0 being the most acidic, and 14 being the most basic. An enzyme is a biological catalyst made up of proteins. Enzymes speed up reactions by bringing reactants close together and lowering the activation energy. Enzymes are extremely specific to their substrates. A substrate is material where an organism lives or the surface upon which an organism grows or is attached. Gauicol was the substance we used as a reducing…

    • 1598 Words
    • 7 Pages
    Better Essays
  • Powerful Essays

    Catalase Lab

    • 1797 Words
    • 8 Pages

    In this laboratory exercise we studied enzyme catalase, which accelerates the breakdown of hydrogen peroxide into water and oxygen. The purpose was to isolate catalase and measure the rate of activity under different conditions. The laboratory was also conducted in association with a second laboratory that measured the effects of an inhibitor on the enzymes. Changes in temperature and pH along with Substrate Concentration and Enzyme Concentration were the conditions tested in the experiment.…

    • 1797 Words
    • 8 Pages
    Powerful Essays
  • Good Essays

    Enzyme Catalysis Lab

    • 1096 Words
    • 5 Pages

    Enzyme catalysis was observed in order to analyze how changes in temperature, pH, enzyme concentration, and substrate concentration affected an enzyme-catalyzed reaction. This experiment analyzed the rate of enzyme-catalyzed reactions and observed the correlation between catalase activity and products formed. It was found out that the rate of an enzyme-catalyzed reaction starts off rapidly, decreases, and levels off or completely stops, and can be further affected by environmental factors, which play a crucial role in regulating enzymes and metabolic processes.…

    • 1096 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Introduction: Enzymes are biological catalysts that speed up metabolic reactions without being affected. They lower the activation energy needed to start a reaction.Enzymes are affected by several factors including PH, Substrate concentration; Temperature & other factors. Each enzyme has an optimum temperature at which its activity is the highest, below this optimum temp, the kinetic energy of molecules decrease , therefore the collisions between the active site of the enzyme and substrate decreases , as a result the enzyme activity will decrease , so decreasing the rate of the reaction If the temp. Exceeds the optimum temp. The kinetic energy between molecules increase therefore collisions increase leading to the change in the tertiary structure of the enzyme and in this case active site is lost and the enzymes will be denatured so the reaction will slow down &stops. Catalase is an enzyme, found basically in all living cells. It breaks down hydrogen peroxide (waste product) into water and oxygen.…

    • 1315 Words
    • 6 Pages
    Good Essays
  • Better Essays

    Enzyme Formal Lab

    • 2542 Words
    • 11 Pages

    The purpose of this investigation is to figure out how temperature, pH, and enzyme concentration affect the reaction rate of an enzyme. It’s important to understand how certain factors affect enzymes because of their crucial role in the metabolic processes of life. Enzymes lower the activation energy necessary for a chemical reaction to occur, allowing vital processes such as digestion, ATP production, and DNA replication to occur efficiently. Using a Vernier Gas Pressure Sensor the rate of reaction of the enzyme catalase as it decomposed Hydrogen Peroxide in a test tube was measured and then results were put on the screen of a Macintosh computer using Logger Pro software and Vernier computer software. Several trials were then done with one factor, either temperature, pH, or enzyme concentration being altered, while the remaining two stayed constant. The rate of reaction of catalase should increase with enzyme concentration until a certain point until it reaches its limit. For temperature the rate of reaction of catalase should increase until the enzyme catalase denatures, and then after the rate should start to decrease. When exposed to different pH levels the rate of reaction of catalase should increase as the enzyme catalase reaches its optimal pH level, once it’s at that point the rate of reaction should then decrease as the pH level goes farther away from catalase’s optimal pH level. The data for the trials of pH and enzyme concentration support the expected hypotheses of how the reaction rate would be affected, however the data did not support the hypothesis made for the effects of temperature on an enzyme’s reaction rate due to divergent data from the expected results. (need this line or is conclusion and results of data and trends summarized with data supported hypotheses) ask if titel too long,,…

    • 2542 Words
    • 11 Pages
    Better Essays
  • Satisfactory Essays

    Enzyme Lab Report

    • 790 Words
    • 4 Pages

    Enzymes and ATP Enzymes act as protein catalysts in biochemical processes Enzymes bind to a substrate and forms the enzyme substrate complex. Enzymes work by lowering the energy of activation. Activation energy must be supplied for the reaction to begin, once supplied, the reaction can proceed on its own. Enzymes can speed up events.…

    • 790 Words
    • 4 Pages
    Satisfactory Essays

Related Topics