5:05 PM Tue May 5全65%Enzymes.pdfSubstratemodificationProduct CLabel the diagram on the following slide:• 1. substrates• 2. products3. energy of activation without enzyme• 4. energy of activation with enzyme• 5. Which has more energy in this reaction, the substrates or theproducts?• 6. What happens to the difference in energy during the reaction?How does an enzyme makereaction go aster?a chemicalDA+Benergy(calories)C+DTime (min)3a22

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Answered: 5:05 PM Tue May 5 全65% Enzymes.pdf…

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter6: Metabolism

Section: Chapter Questions

Problem 7RQ: Which of the following comparisons or contrasts between endergonic and exergonic reactions is false?...

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9:34 AM You sent Help me with this one 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…
1. Can the absorbance readings be used as a measure of enzyme activity atdifferent pH’s? 2. Describe an industrial application in which control of temperature and pHare critical to optimal enzymatic function.
22. What is a major benefit of calculating catalytic efficiencies? Group of answer choices It determines whether a catalytic reaction is cooperative It allows you to compare different substrate preferences for an enzyme It tells you the rate of an enzyme reaction It allows you to determine the efficiency of the enzyme being studied
1. Explain why the maximum initial reaction rate cannot be reached at low substrate concentrationsPredict or describe the absorbance or enzyme activity at: pH = 2 pH = 14 Explain your predictions 2. Explain why the maximum initial reaction rate cannot be reached at low substrate concentrations.
Introduction: (4 pts) (Answer questions in paragraph form - 300 words max) What are enzymes and what do they do? What are the optimal conditions for an enzyme? What factors affect enzyme activity and how? How is the structure of an enzyme related to its function? What is amylase? What reaction does it catalyze? Research the amylase enzyme you used (organism) and the optimal conditions of temperature, pH, or salt, it requires. Explain why DNS is used and why it is important for determining enzyme activity. Cite and reference your sources using APA style.
1. Which medium would you consider to be “complex” and which “defi ned”? Which is “rich” and which is “minimal”? Explain your answers. 2. Given that polyurethane is a huge polymer (MW >>100,000 Daltons), why is it important that thepolyurethanase is a secreted enzyme? If we assume that the polyurethane is the source of energy for the organism, how can material (carbon atoms) from it fi nd its way into the central metabolic pathways ofthis microbe? What is the “entry point”? What happens after its entry into the metabolic pathway?
Based on the attached photo, answer the ff. questions: 1. Why is the condensation of glutamate and ammonium an endergonic reaction? 2. How much energy was used by the endergonic reaction? What happens to the free energy?
An enzymatic reaction follows M-M kinetics with Vmax= 2.5 mol m-3s-1and Km = 5 mM.Calculate the time required for 50% conversion of the substrate in a batch reactor if theinitial substrate concentration is0.2 M.Show your calculation steps.
Match each tern with its most suitable description. _____ reactant a. assists enzymes _____ phagocytosis b. forms at reactions end _____ lipid bilayer c. enters a reaction _____ cyclic pathway d. enzyme action _____ product e. one cell engulfs another _____ cofactor f. electron exchange _____ passive transport g. no energy input required _____ catalysis h. phospholipids + water _____ redox reaction i. goes in circles _____ first law of thermodynamics j. basis of diffusion _____ concentrarion gradient k. energy cannot be created or destroyed
Which of the following substances does not participate in the CalvinBenson cycle? a. ATP b. NADPH c. RuBP d. PGAL e. O2 f. CO2
Result nad Discussion Lead Acetate Reaction: Samples: lysine, cysteine, methionine Reagents: 10% Sodium Hydroxide (NaOH) and Lead Acetate Pb(CH3COO)2 -To 1 ml of the amino acid solution taken in a test tube, add few drops of sodium hydroxide (40%) and boil the contents for 5-10 mins over a bunsen burner. Cool the contents and add few drops of 10% Lead acetate solution and observe.
45. Which of the following is/are true? (MARK ALL THAT APPLY) Group of answer choices Enzymes lower the activation energy of the reaction Enzymes bind more strongly to the substrates than the transition state of the reaction Enzymes alter the standard free energy of the reaction. Enzymes force reactions to proceed in only one direction. Enzymes alter the equilibrium of the reaction. PreviousNext

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