Preview

College lab report on enzymes

Better Essays
Open Document
Open Document
1294 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
College lab report on enzymes
Lab Ex#8: "Enzymes: Catalysts of Life"

INTRODUCTION

Enzymes are protein organelles where chemical reactions take place to generate energy within our cells. Without the energy produced from the cell enzyme activity, we would not possess the catalyst activity necessary for energy to produce movement.

Each enzyme performs a specific function within our bodies. Those functions performed can be significantly altered with the introduction of variables outside their environment. Variables, such as temperature increases or decreases, can instigate dramatic effects on the enzyme and its intended function.

The enzyme has a three-dimensional structure that is specific for the acceptance of a unique like enzyme and when fused together they form a new complex product. The enzyme then returns to its original state, upon which time recycles this process of fusion with its specific substrate.

The experiment was to observe what occurs when the enzyme is introduced to a range of temperatures and to determine if an enzyme having similar characteristics will perform the same chemical reaction.

PROCEDURE

1. Formation and Detection of Benzoquinone:

- Stations were set up having three test tubes, a wax marker and a ruler for measuring. We were to indicate measurements on each test tube at 1cm and 2cm from the bottom. We then identified each test tube as 2a, 2b, and 2c.

- We filled each test tube with the following: 2a with 1cm of potato extract containing Catechol Oxidase and 1cm of 1% Catechol Solution; 2b with 1cm of potato extract containing Catechol Oxidase and 1cm of dH2O; 2c with 1cm of 1% Catechol Solution and 1cm of dH2O. We tapped each tube to completely mix the solution and recorded the time at zero.

- At zero time, each test tube was scaled for color concentration. A color range, zero to five, was to be used. If little color was present, we scaled the tube at zero, and if a deep brownish-gold color was visible, we were to scale the tube at five, all others were

You May Also Find These Documents Helpful

  • Better Essays

    GRT1 Task 4

    • 964 Words
    • 4 Pages

    Enzymes are proteins that act as catalysts during a biochemical process. Catalysts are non-changing enzymes that can increase or decrease activation energy to accelerate or slow down a biochemical reaction without using additional energy.…

    • 964 Words
    • 4 Pages
    Better Essays
  • Better Essays

    Purpose/Problem: There are four parts to the Enzyme Catalyst lab - Activity A, B, C, and D. In activity A, the characteristics of enzyme actions will be observed. The main purposes are to determine the rate of an enzyme catalyzed reaction, to study the characteristics of an enzyme mediated reaction, and to observe the effect of heat on enzyme activity. The purpose of activity B is to use the Titration Protocol to determine the initial amount of H2O2 present in a solution. The amount will be the baseline for activities C and D. The purpose of activity C is to determine the rate at which H2O2 spontaneously decomposes when exposed to room temperatures and ambient light for 24 hours. The purpose of activity D is to determine the rate at which catalase decomposes H2O2. After adding H2SO4 for different time lashes, etc., the resulting data will be graphed at which the catalase decomposed by catalase.…

    • 2040 Words
    • 9 Pages
    Better Essays
  • Good Essays

    Hold in liquid for about three-seconds and then touch the disk to the inside of the beaker to remove excess drops of liquid.…

    • 591 Words
    • 3 Pages
    Good Essays
  • Good Essays

    3. 10mL of milk was poured into the test tubes using the measuring cylinder for accurate amounts then label the test tubes to indicate what temperature they will be subjected to and if they are to receive the enzyme.…

    • 929 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    Enzymes Lab Report

    • 371 Words
    • 2 Pages

    -We had three different test tubes. These test tubes were labeled 1, 2, and 3. These tubes all had 3.5 mL water, 2 mL catechol, 0.5 mL extract. Each of these tubes were put into water of three different temperatures for 5 minutes and then were taken to the Spec 20 to check their absorbency. We had a blank tube, which measured 1 mL of potato extract and 5 mL of distilled water, this was how we zeroed the Spec 20.…

    • 371 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    The prediction for the effects of temperature on the enzyme activity was that the reaction’s rate would increase as the temperature increased, until they go over the optimum temperature where the enzymes denature and the reaction’s rate quickly drops to zero. At 5 degree C the rate is 0.00059mole PNP/min. This then increases to 0.01031mmoles PNP/min at a temperature of 50 degree C. The rate then drops drastically to -0.00215moles PNP/min. This point is where the enzymes have been denatured and have no activity, shown as the last point on the fig 8 and 9, do not fit on the graph. The optimum temperature was about 47 degree C. The core body temperature is only about 37 degree C and thus these enzymes are operating below their optimum temperature.…

    • 521 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Enzyme Lab Quiz

    • 293 Words
    • 2 Pages

    4. Enzyme-substrate complex – modifies the substrate’s chemical bonds and initiates a series of chemical reactions resulting in the formation of a product.…

    • 293 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Peroxidase Lab

    • 823 Words
    • 4 Pages

    The materials needed for this experiment were four medium sized tubes, a spectrophotometer, a buffer with a pH of 5, H2O2, Peroxidase, and Guaiacol Dye. We as a group had four tubes labeled two, three, four, and five. In the tube labeled two we had a solution of 2.0 mL of H2O2 and 1.0 mL of Guaiacol Dye for a total solution of 3.0 mL. In the tube labeled three we had a solution of 4.0 mL buffer and 1.0 mL Peroxidase for a total of 5.0 mL solution. In the tube labeled four we had a solution of 2.0 mL H2O2 and 1.0 mL Guaiacol Dye for a total of 3.0 mL solution. Last, in the tube labeled five we had a solution of 4.0 mL buffer and 1.0 mL Peroxidase for a total solution of 5.0 mL. We then set the spectrophotometer to a value of zero, using a blank containing buffer, H2O2, and Guaiacol Dye. After that, tubes two and three were mixed together and tubes four and five were mixed together for a large solution of with a total of 8.0 mL. Once the two solutions are mixed clean the tube with a Kim Wipe, so all fingerprints are removed. Place the tube with solutions of four and five in the ice bath for twenty minutes. While placing the tube in the spectrophotometer make sure the white strip that is on the tube is facing the direction of the person who is handling placing the tube I the spectrophotometer. Furthermore, just let the spectrophotometer act on the solution for the desired length of time while recording the data at each specific…

    • 823 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Enzyme Lab Report

    • 492 Words
    • 2 Pages

    The first solution was tube 1 which was made with 1 mL of EDTA, 1 mL of CO, and 5 drops of CAT. Tube 2 was made with 1 mL of PTU, 1 mL of CO, and 5 drops of CAT. Tube 3 was made with 1mL of distilled water, 1 mL of CO, and 5 drops of CAT. After mixing each solution and putting a piece of Parafilm on Tube 1, we set tube 3 as our blank and then measured the change in absorption at 400nm of both tube 1 and tube 2 every two minutes for a total of twenty minutes.…

    • 492 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Enzyme Lab Write Up

    • 724 Words
    • 3 Pages

    Enzymes are proteins that are involved in all the chemical processes in living things. As they are made of proteins they are affected by pH and temperature. Enzymes are catalysts; they speed up chemical reactions without being changed themselves. Digestive enzymes speed up the breakdown of large food molecules into smaller ones so that the blood can absorb them. Enzymes turn a large starch molecule into thousands of tiny glucose molecules. Enzymes end in 'ase'. There are thousands of enzymes in our body but each enzyme is only specialised to do one thing, for example carbohydraise enzymes digest carbohydrates, protease enzymes digest protein.…

    • 724 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Lab 6 enzymes

    • 1000 Words
    • 5 Pages

    Purpose: The purpose of this lab is to test for enzyme activity, look at enzyme specificity, and how temperature affects enzyme activity.…

    • 1000 Words
    • 5 Pages
    Good Essays
  • Better Essays

    Enzyme Lab Report

    • 955 Words
    • 4 Pages

    using different temperature and pH to affect the function of the enzyme, which ultimately, will…

    • 955 Words
    • 4 Pages
    Better Essays
  • Good Essays

    When they are at higher temperatures enzymes denature, which means to stop working. Enzymes have a part called the active site, which is when certain molecules bind to the enzyme and a reaction happens. Homeostasis is maintained by the vital organs, enzymes, waste management functions, and food and water. It’s then converted into energy and used to fuel other parts of the body. Some situations will contain multiple substrate molecules that the enzyme will change. The enzyme grabs on to the substrate in the active site, this is called the substrate complex. Catalysis happens when the substrate is changed, it will break or build chemical bond and you will be left with a products complex. The enzyme releases the product and they go back to the original…

    • 589 Words
    • 3 Pages
    Good Essays
  • Better Essays

    enzyme

    • 2347 Words
    • 10 Pages

    Changes in temperature can dramatically influence the activity of most enzymes by affecting enzyme structure. This exercise is designed to help you learn how to set up an experiment in Enzyme Lab and understand the effect of temperature on enzyme activity. You will also analyze data from this experiment to determine the ideal temperature optimum for invertase activity.…

    • 2347 Words
    • 10 Pages
    Better Essays
  • Good Essays

    Different sequence of amino acid produces different structure of protein, which determines the property of protein, thus each kind of enzymes has its unique active site, which only fits to complementary – shaped substrate to form product. Because of the feature of active site, each kind of enzymes therefore is specific for a particular reaction. However, there are several factors affect the rate of enzyme reactions, they are temperature, pH, concentration of enzyme, concentration of substrate and inhibitors. High temperature and pH affects the structure of enzyme, irreversible denaturation occurs, the shape of active site is changed, enzymes therefore no longer function. The effect of the other factors is slowing down the rate of enzyme reactions, it depends on the concentration of those factors. Since enzymes are catalyst of chemical reactions, they are responsible to the activities of cells, and they determine the function of tissues and organs as well.…

    • 625 Words
    • 3 Pages
    Good Essays

Related Topics