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- Enzyme Concentration 8. Why doesn't it matter if enzymes keep getting added to graph E? What would it take to increase the rate of enzyme activity? Then answer the following questions: 1. Transfer of Energy and Matter: Is an enzyme used up in a chemical reaction? Explain. 2. Transfer of Energy and Matter: How would your diagram be different if the enzyme activity was anabolic instead of catabolic? (E.g., an enzyme to build muscle proteins). a. Rate of ReactionWhich of the following comparisons or contrasts between endergonic and exergonic reactions is false? Endergonic reactions have a positive ?G and exergonic reactions have a negative ?G Endergonic reactions consume energy and exergonic reactions release energy Both endergonic and exergonic reactions require a small amount of energy to overcome an activation barrier Endergonic reactions take place slowly and exergonic reactions take place quickly.Which of the following is the best way to judge the relative activation energies between two given chemical reactions? Compare the ?G values between the two reactions Compare their reaction rates Compare their ideal environmental conditions Compare the spontaneity between the two reactions.
- 1 of 1 3. A sample of glucose reacts in anaerobic respiration. The right- hand box below shows a particle diagram of the moles of substances present after the reaction is complete. fe On a piece of paper draw the "Before" box as shown and draw a particle diagram of the reactant molecules that produced the mixture shown on the right. Key = C2H5OH = CO2 = CgH1206 Sub Before After You will need to draw a diagram to answer this question. On a piece of paper, draw the "Before" box as shown, and then draw a particle diagram of the reactant molecules that produced the mixture shown on the right. Upload an image of your drawing by clicking "Upload files" or by dragging and dropping your file into the box. Or, use your device's camera to take a photo of your work by clicking the camera icon.Energy Energy 2. For both of the graphs below, (A) draw a new blue line showing what the reaction would look eperau nzyme were added, and (B) draw a new red arrow showing how the activation energy would be reduced by the enzyme. Exergonic Reaction Endergonic Reaction कपाजम olidininl C Activation Activation energy (no enzyme) energy (no enzyme) Reactants Products nodidinned/T Products Reactants ow paiwollol ar io lAa Reaction progress → Reaction → progress 3. How does an enzyme work? (A) Use 3TRUE OR FALSE 1. ADP-ATP is a single path process and is not a cycle. 2. Reaction coupling is a process in which an energetically favorable reaction is directly linked with an energetically unfavorable reaction. 3. Endergonic reaction is the release of energy by breaking chemical bonds of a large reactant and producing smaller products. 4. ATP stands for adenosine triphosphate. 5. Different light intensities can greatly affect the rate of photosynthesis. 6. ADP is composed of a phosphate group, sugar and nucleic acid while ATP does not. 7. Once ATP is used, it will be digested to be used in making other molecules. 8. ATP is an energy carrier. 9. ATP is manufacturers during various processes such as fermentation, cellular respiration, and photosynthesis. 10. Coupled reactions utilizes ADP to facilitate chemical reactions.
- Select true if the statement is CORRECT and false if OTHERWISE 1. Enzymes are catalysts and increase the speed of a chemical reaction without themselves undergoing any permanent chemical change. 2. Catalysis is defined as the acceleration of a chemical reaction 3. if the amount of the enzyme is kept constant and the substrate concentration is then gradually increased, the reaction velocity will decrease. 4. In the Induced-fit Model, if a dissimilar substance which does not fit the site is present, the enzyme rejects it 5. The Michaelis constant Vo is defined as the substrate concentration at 1/2 the maximum velocity. 6. A prosthetic group - an organic substance which is dialyzable and thermostable which is firmly attached to the protein or apoenzyme portion. 7. The rate of an enzyme-catalyzed reaction increases as the temperature is raised beyond optimum temperature. 8. Enzymes can be classified by the kind of chemical reaction catalyzed. 9. The living cell is the site of tremendous…1a-Which of the following is/are true for all exergonic reactions? Select all that apply Select one or more: a. The products have more total free energy than the reactants. b. The reaction proceeds with a net release of free energy c. The reaction requires energy from a coupled endergonic reaction d. A net input of energy from the surroundings is required for the reactions to proceed 1b-Which of the following can change the activity of a single enzyme? Select all that apply Select one or more: a. An inhibiting molecule noncovalently binding to the active site. b. A regulatory molecule noncovalently binding to a location other then the active site (an allosteric site). c. Another enzyme phosphorylating the enzyme of interest. d-Removal of a small section of the enzyme.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…
- 8 eBook Select all of the following that could apply to the brown curve. Enzyme concentration is higher. Temperature for an enzyme is too high. Temperature for an enzyme is optimal. Activation energy is lower. Enzyme concentration is lower. Activation energy is higher. Reactants Progress of reaction, Products2. Enzyme-catalyzed reactions. Answer the following with true or false. If false, explain why. (a) The initial rate of an enzyme-catalyzed reaction is independent of substrate concentration. (b) At saturating levels of substrate, the rate of an enzyme-catalyzed reaction is proportional to the enzyme concentration. (c) The Michaelis constant Km equals the substrate concentration at which velocity (v) = Vmax/2. (d) The Km for a regulatory enzyme varies with enzyme concentration. (e) If enough substrate is added, the normal Vmax of an enzyme-catalyzed reaction can be attained even in the presence of a noncompetitive inhibitor. (f) The Km of some enzymes may be altered by the presence of metabolites structurally unrelated to the substrate. (g) The rate of an enzyme-catalyzed reaction in the presence of a rate-limiting concentration of substrate decreases with time. (h) The sigmoidal shape of the v versus [S] curve for some regulatory enzymes indicates that affinity of the enzyme for the…6E. Draw a reaction coordinate diagram describing the different steps of ATP synthase catalysis, comparing the relative free energy of each state. What is the rate-limiting step in ATP synthase catalysis in the direction of ATP synthesis?