Campbell Essential Biology (6th Edition) - standalone book
6th Edition
ISBN: 9780133917789
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece, Kelly A. Hogan
Publisher: PEARSON
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Chapter 5, Problem 13PS
Interpreting Data The graph illustrates two
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ENZYME CATALYSIS lab
Construct a hypothesis addressing the effect concentration will have on rate of reaction.
What chemical reaction is being catalyzed in the experiment? Label the substrate(s), enzyme and product(s).
MAKE A GRAPH FOR ME ON GRAPH PAPER CALL IT ENZYMES VS RATE OF REACTION USING TABLE BELOW
GRAPH paper INSERTED BELOW
rules: data points must be an x or circled dot, must be on grid paper , the independant variable on the x axis and dependant variable on the y axis, must include titles
Regarding the data points:
- H2O2 + MnO2 Control #1: (Control #1, 5)- H2O2 + sand control #2: (Control #2, 0)- Plant versus Animal Liver Catalase: (Liver, 4)- Potato: Plant vs. Animal Catalase: (Potato, 3)- Substance Enzyme Concentration (Used Liver): (Liver Used, 4)- Substance Enzyme Concentration (Used H2O2): (Used H2O2, 1)
- Boiling Water Bath Temperature: (Boiling Water Bath, 5)- Ice Water Bath Temperature: (Ice Water Bath, 2)- HCl, or pH 3: (H 3, 4)- NaOH at pH 12: (pH 12, 2)- pH 7 (H2O): (assuming average of pH readings; pH 7, not specified)
The following explains how to display the graph:
Title: Factors versus Enzyme Activity Rate - Labels on X- and Y-axes: Factors and Rate of Enzyme…
Graph B above depicts Lineweaver-Burk double reciprocal plot for an enzyme catalyzed reaction carried out in the presence or absence of an inhibitor. Which of the following statement best describes the kinetic data shown below: ?
Line 1 depicts the enzyme-catalyzed reaction carried out in the presence of a competitive inhibitor.
Line 1 depicts the enzyme-catalyzed reaction carried out in the presence of a noncompetitive inhibitor.
Line 2 depicts the enzyme-catalyzed reaction carried out in the presence of a competitive inhibitor.
Line 2 depicts the enzyme-catalyzed reaction carried out in the presence of a noncompetitive inhibitor.
Chapter 5 Solutions
Campbell Essential Biology (6th Edition) - standalone book
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- an enzyme acts on a substrate X. The enzyme exists in four different forms, with different catalytic efficiencies. The table shows the kcatand KM values for each form of the enzyme. If the concentration of substrate X in a solution is 5 µM, which of the four forms of the enzyme is the most efficient? Form of Enzyme kcat (s-1) KM (µM) A 50 10 B 50 1 C 100 4 D 1000 100 a. Form A b. Form B c. Form D d. Form Carrow_forwardPractice Mira Gendy 1 of 1 Directions: This short free-response question requires about 6 minutes to answer. The question is worth 3 points. Read the question carefully and completely. Answers must be written out in paragraph form. Outlines, bulleted lists, or diagrams alone are not acceptable. II Substrate Concentration [S] The graph above shows the initial rate of an enzyme-catalyzed reaction at different substrate concentrations in the presence of a constant concentration of the enzyme. Connect the primary structure of the enzyme to its overall shape. I U x X2 5 Initial Rate of Reactionarrow_forwardTrue/False Question: Enzymes do not shift the equilibrium of the reactions that they catalyze. O True O ralsearrow_forward
- 3.1 In the picture below label the following: substrate, active site, enzyme, product. Briefly explain what is happening in each picture (figure 6.16 will be VERY helpful). 3.2 Below is a graph showing how enzymes affect the energy of a reaction. Label the following in the graph (reactants, products, activation energy with no enzyme, activation energy with enzymes, time, energy)arrow_forwardWhich of the two graphs, below, represents an enzyme catalyzed version of the reaction Y-->X? Utilizing your understanding of enzyme function, clearly explain why you chose your answer. activation energy for reaction Y-X activation energy for reaction Y X reactant reactant product product (A) uncatalyzed reaction pathway enzyme-catalyzed reaction pathway (8) total energy- total energyarrow_forwardRearrange the following terms to show the process of enzymatic reaction. Use and + to complete the equation. enzyme enzyme-substrate complex enzyme product substrate Several important things should be noted about this reaction: 1. A/an because of the fit between their structures; 2. As a result, something happens to the example, it might be split in two at a particular location. 3. Then the and 4. The enzyme is again. 5. Note that the arrows in the formula for enzyme reaction point acts on a specific to form a/an molecule. For comes apart, yielding the in the reaction and is now free to react _- This means that the reaction is 6. An enzyme-substrate complex can simply go back to the the 7. The products of an enzymatic reaction can react with the enzyme to form the and again; 8. It, in turn, may again form the 9. Therefore, the same. and the may act to cause a to go either way.arrow_forward
- Given: Your professor gives you a vial of enzyme and a vial of substrate. The product of this reaction is fluorescent and you can measure the concentration of the product as a function of time. (answer a, b, and c)a) Your professor tells you to quantify how much product is being produced per minute at thebeginning of the experiment. What exactly are you measuring?b) On the same plot, show the kinetic curve for an increased quantity of enzyme. Assume a 2x concentration. Indicate Km and Vmax.c) You don’t have a computer hand. Sad. How can you plot the data such that you can get important Michaelis-Menten values?arrow_forwardEnzyme X and enzyme Y catalyze the same reaction and exhibit the νo versus [S] curves shown below. Which enzyme is more effi cient at low [S]? Which is more effi cient at high [S]?arrow_forwardWhich statements are false? Initial velocities of enzyme reactions are best obtained in the absence of product because it simplifies analysis. Initial velocities refer to the velocity of the reaction right after it is initiated. The velocity of the reaction as a function of measuring time are curved just like an isothermal binding curve because of substrate binding to the enzyme. Initial velocities correspond to the pre-steady state condition for free enzyme. Initial velocities can sometimes be measured by spectroscopy such as UV/Vis spectroscopy when monitoring the production of NADH from NAD+. The velocity of the reaction will eventually go to zero. The reaction will reach equilibrium because of the presence of the enzyme. It is always better to use substrate rather than product to measure enzyme kinetics.arrow_forward
- using the method for experiment below and the table conduct 1 graph of the different factors vs rate of enzyme activity. The experiment began by preparing a hot water bath by boiling water and an ice water bath using ice in a 400 mL beaker. In the control group, 2 mL of 3% H2O2 was placed in a test tube and a pinch of MnO2 was added. The rate of this reaction was assigned as 5, and the production of bubbles in millimeters (mm) was noted. The reaction was considered complete when no more bubbles were produced. Another control group was set up by placing 2 mL of 3% H2O2 in a test tube and adding a pinch of sand, with the rate of reaction assigned as 0. To investigate the difference between plant and animal catalase, 2 mL of H2O2 was added to a test tube and a small piece of fresh liver was added. The rate of reaction between 0-5 was noted, along with the production of bubbles in mm. The same procedure was repeated using a small piece of fresh potato. Next, the effect of…arrow_forwardBelow is kinetic data obtained for an enzyme-catalyzed reaction. The enzyme concentration is fixed at 100 nM. Using a Lineweaver-Burke plot, calculate the kcat value for this reaction. Report your answer to three significant figures in units of 1/sec.arrow_forwardWrite a chemical equation for the reaction catalyzed in model one —— Chemical Reaction I wrote ( Lactase —> Glucose + Galacose ) 1. Referring to the chemical reaction you wrote for the question above is lactase a reactant or product or neither explain how you know. Q2.  describe the role of the enzyme lactase played in the reaction. Q3.) what do you think could happen to the enzyme lactase at the end of the reaction Q4.)  enzymes play a very specific roles in cells and will work on specific substrates, for example, well liked his breaks down like lactose, lipase is an enzyme that breaks down lipid molecules. Using the base and lactase examples describe how are most enzymes are named. Q5,) suppose a model of a different disaccharide sucrose would like to be able to break down sucrose explain your answer.arrow_forward
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Enzyme Kinetics; Author: MIT OpenCourseWare;https://www.youtube.com/watch?v=FXWZr3mscUo;License: Standard Youtube License