Enzyme Lab Report Essay

Good Essays
Enzymes are generally protein macromolecules that act as catalysts in metabolic reactions. A catalyst is a chemical agent that speeds up a reaction without being consumed by the reaction. Enzymes speed up metabolic reaction rates by lowering the activation energy barrier, which is the amount of energy initially needed to spark a reaction. It allows reactant molecules to absorb enough energy to break bonds and react without raising the temperature to an extreme. During this process the substrate or the substance an enzymes reacts upon, binds to the enzyme’s catalytic pocket or active site, and is held together by weak interactions in an enzyme substrate complex. Because the chemical bonds that hold the substrate are disrupted, the amount of energy required to break the bonds is lowered and the reaction occurs faster. The active site converts substrate into product and the reaction repeats. …show more content…
Therefore changes to the shape of an enzyme hinder its ability to recognize its substrate, which in turn affects its ability to function. These changes usually occur in the external environment of the enzyme: change in temperature, pH level, and ionic concentration. When the changes in the environmental conditions are too extreme, the enzyme denatures meaning it completely loses its ability to function. The purpose of this experiment was to observe how changes in these external environment factors affect an enzyme’s reaction rate. Three different levels of each variable were used to see how liver enzyme catalase reacts with the substrate hydrogen peroxide. This experiment allows scientists to compare low, intermediate, and high levels of temperature, pH, and ionic concentration to determine which level provides an optimal condition versus which level causes the enzyme to

You May Also Find These Documents Helpful

  • Good Essays

    Enzyme lab report

    • 807 Words
    • 4 Pages

    Name : Andi Nadya Amanda Period : 4 Grade : 11 Enzyme Lab Report Question How heats effect the length of reaction time of an enzyme? Hypothesis I think the heat will make the length of reaction time of an enzyme become slowly. Heat is one of a way to denature the substrate. It means the heat will break down the structure of substrate in order the reaction of enzymes that we activated into it become slowly. Method for Collecting Data First I will record the length of reaction time…

    • 807 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Enzyme Lab Report Essay

    • 988 Words
    • 4 Pages

    Introduction Enzymes are key players in metabolism. A metabolism is the organic processes in a cell or an organism that are necessary for life. An enzyme affects the rate at which a reaction occurs when the activation energy is lowered. In this reaction the reactant is called the substrate which is that combine with enzymes molecules to form a temporary enzyme substrate complex. During this products are formed and the enzyme molecules released is unchanged. For the substrate complex to form the…

    • 988 Words
    • 4 Pages
    Good Essays
  • Better Essays

    Enzymes Lab Report

    • 1657 Words
    • 7 Pages

    Enzymes Lab Report Inroduction In this lab we explore an enzymes activity and how it can be affected by changes to its environment. An enzyme is a protein and is a catalyst to chemical reactions. It helps accelerate reactions by lowering the activation energy, which is needed for reactions in cells to progress at a higher rate. Activation energy is the minimum amount of energy needed for a chemical reaction to occur, yielding products from a given set of reactants. (Unit 7: Enzymes lab) Products…

    • 1657 Words
    • 7 Pages
    Better Essays
  • Satisfactory Essays

    Lab Report on Enzyme

    • 286 Words
    • 2 Pages

    BIOLOGY LAB REPORT (UNIT 7: ENZYMES) GENERAL Enzymes are protein that acts as catalyst, lowering the activation energy need for reactions to progress in cells. The reaction can still occur without the presence of the enzyme, but at a much slower rate. The activation energy is the minimum amount of energy need for a chemical reaction to occur, yielding from a given set of reactants. In enzymatic reactions, we have substrates which are reactants of reaction bound to an enzyme. While an active site…

    • 286 Words
    • 2 Pages
    Satisfactory Essays
  • Better Essays

    Enzymes: Lab Report

    • 2612 Words
    • 11 Pages

    Introductory Biology 1 Biology 1003 Fall Term 2011 Lab Number: 3 Title: Cell Energetics: Enzyme Role in Biological Reactions Name: Brandon Moore Student Number: 100819124 Lab day and time: Wednesday pm Date: Wednesday November 23, 2011 Introduction Enzymes are a key aspect in our everyday life and are a key to sustaining life. They are biological catalysts that help speed up the rate of reactions. They do this by lowering the activation energy of chemical reactions (Biology…

    • 2612 Words
    • 11 Pages
    Better Essays
  • Good Essays

    Enzyme Lab Report

    • 418 Words
    • 2 Pages

    Enzyme Lab Report Introduction: Enzymes are proteins that enable chemical reactions. In the enzyme lab, the effects of concentration, temperature and pH on the functionality of the enzyme catalase. The enzyme lab was also about measuring reactions by capturing the oxygen that was generated by the reaction. Materials and Methods: Experiment 1, 2, & 3 Experiment 1 examined the effects of concentration on catalase activity. Experiment 2 examined the effects of concentration in temperature…

    • 418 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Enzyme Lab Report

    • 1528 Words
    • 5 Pages

    Sterling Hayden AP Biology Mrs. Proehl 24 November 2014 I. Title Effect of Differing pH, Temperature, and Enzyme Concentration on Catalase Reaction Rate II. Introduction Enzymes are used to increase the rate of specific reactions in the body. Catalase, a specific enzyme, speeds the breakdown of hydrogen peroxide, a toxic chemical produced by cells in the body, into water and oxygen (Cain and others, 2010). The oxygen can be observed as bubbles coming from the reaction site. Catalase is found in many living tissues of organisms…

    • 1528 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Enzymes Lab Report

    • 504 Words
    • 3 Pages

    Enzymes are catalytic proteins that speed up chemical reactions by lowering the activation energy of the reaction. our body cells depend highly on enzymes to complete many important functions, such as digestion and metabolism. Enzymes are selective, in which each enzyme can only speed up a specific reaction. There are molecules that enzymes work with called substrates. substrate bind to an area of an enzyme called active site. There is specificity between the enzyme and substrate that react with…

    • 504 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Enzyme Lab Report

    • 757 Words
    • 4 Pages

    Enzyme lab report. Introduction. An enzyme is a protein molecule that speeds up the rates of chemical reactions by many folds. They recognize, bind, and change specific reactants. They do not change thus can catalyze the same reaction again and again. Activation energy also known as an energy barrier is the amount of energy needed in order to begin a chemical reaction. Catecholase catalyzes the reaction rate of catechol oxidation. Catechol is found beneath the skin of many plants such…

    • 757 Words
    • 4 Pages
    Good Essays
  • Better Essays

    Enzyme Lab Report

    • 1548 Words
    • 7 Pages

    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…

    • 1548 Words
    • 7 Pages
    Better Essays