1a-Enzymes serve as catalysts for chemical reactions. What does this mean? Select all that apply. Select one or more: a. Enzymes make reactions more likely to occur. b. Enzymes increase the activation energy. c. Enzymes decrease the free energy (?G) of a reactio d. Enzymes increase the free energy (?G) of a reaction. 1b-When ATP is hydrolysed: Select one: a. The energy will be released as heat if the reaction is not coupled to a substrate, b. The potential energy associated with the resulting ADP molecule increases. c. The terminal phosphate is transferred to a substrate, lowering the potential energy of the substrate d. Water is formed and released as a reaction product.

1a-Enzymes serve as catalysts for chemical reactions. What does this mean? Select all that apply. Select one or more: a. Enzymes make reactions more likely to occur. b. Enzymes increase the activation energy. c. Enzymes decrease the free energy (?G) of a reactio d. Enzymes increase the free energy (?G) of a reaction. 1b-When ATP is hydrolysed: Select one: a. The energy will be released as heat if the reaction is not coupled to a substrate, b. The potential energy associated with the resulting ADP molecule increases. c. The terminal phosphate is transferred to a substrate, lowering the potential energy of the substrate d. Water is formed and released as a reaction product.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter6: Energy, Enzymes, And Biological Reactions

Section: Chapter Questions

Problem 7TYK: In an enzymatic reaction: a. the enzyme leaves the reaction chemically unchanged. b. if the enzyme...

See similar textbooks

Similar questions

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.
1. Make a Lineweaver-Burk plot and use the plot to complete the information in the table and the following questions. a. Is it possible for the enzyme to overcome the effect of the inhibitor in question from the chart. Explain. b. What prevents this enzyme from being an even more catalytically efficient enzyme? c. What do single molecule data indicate about the validity of ensemble data?d. What is the reason that humans are insensitive to sulfa drugs?
2c which is altered by a catalyst such as an enzyme, the net free energy change of the reaction or the activation energy of the reaction?
?? = ??A + log [? -]/[??] An enzyme uses histidine as a general acid catalyst. If the active site histidine has a pKa of 6.0, what percentage of the enzyme is active at pH 7.0? a. 1.0 %b. 9.1 % c. 45 %d. 55 % e. 91 %f. 99 % Please break down every step of the HH equation in as much detail as possible and explain why the answer is correct from a logical standpoint.
1 enzymes are a class of proteins that catalyze biochemical reaction.what are ribozymes? 2 what is the active side of an enzyme? 3 what is the proximity effect in catalysis? 4 what is the orientation effect in catalysis?
A student determined the Km, Vmax and turnover number (kcat) for an enzyme by performing reactions with varying amounts of substrate and a concentration of enzyme at 10nm The student then decided to repeat the reaction with the same substrate concentration but with increased enzyme concentration to 20nm. Would the following increase, decrease or stay the same? Km Vmax Kcat
1 what is does the induced -fit model account for? 2 why are most enzyme inactive at higher temperature ( greater than 37degree Celsius) 3 Does this happen to all enzymes in all species? 4 What are the formulas for the reduced form of the coenzymes?
a) What is the Steady State assumption; how does steady state differ from equilibrium? b) Transition state; what are two ways that enzymes can decrease the transition state energy?
Activation energy (a) Draw a general energy diagram for a chemical reactionproceeding from reactants to products. (b) Indicate on your plot the Transition State withX-double dagger. (c) Add the energy profile for the reaction as catalyzed by an enzyme.(d) Indicate the energy of interactions with the enzyme that stabilize the transition state.
1. The concentration of substrate X is high. What happens to the rate of the enzyme-catalyzed reaction if the concentration of substrate X is reduced? Explain. 2. An enzyme has an optimum pH of 7.2. What is most likely to happen to the activity of the enzyme if the pH drops to 6.2? Explain
4 In a reaction system, the concentrations of Enzyme-Substrate complex (ES), free enzyme [E] and free substrate [S] are 5mM, 2mM and 45 mM respectively. If the enzyme has 5 identical binding sites for this substrate, then calculate the value of Equilibrium Association constant (Ka)
1. Can you describe how electrostatic and steric considerations may lead to preferential stabilization of the transition state at an enzyme active site? 2. What factors are involved in “transition-state complementarity”?