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Which of these represents an endergonic reaction?
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Human Physiology
- Kinase reactions describe enzymes which _____________. a. transfer groups from one part of a molecule to another b. use NAD/ NADH in their reactions. c. add or remove double bonds in molecules. d. add phosphate groups to another moleculearrow_forwardIn biological systems, ATP functions bya. providing the energy to drive endergonic reactions.b. acting as an enzyme and lowering the activation energy of certainreactions.c. adjusting the pH of solutions to maintain optimal conditions forenzyme activity.d. regulating the speed at which endergonic reactions proceed.e. interacting with enzymes as a cofactor to stimulate chemical reactions.arrow_forwardYou have a reaction that takes 8 hours to reach completion at 20 degrees celcius. What is the likely result of changing the temperature to 30 degrees celcius? a. the reaction should take less times b. reaction time would be unaffected c. the reaction should take more time Which would be the correct answer to this question?arrow_forward
- Choose in the options what do enzymes do for the activation of energy of the reaction -Ea, given the theory of collision? a. enzymes will bind the reactants b. enzyme will raise temperature to incease the level of energy level. c. enzyme will provide an alternative reaction pathwayarrow_forwardWhen an enzymatic reaction is in progress, do you expect to see happen to the amount of product? A It will increase as the reaction proceeds. B It will decrease as the reaction proceeds. C The amount will not change as reaction proceeds. D It is not possible to predict what will happen to it as the reaction proceeds.arrow_forwardWhich of the following statements is/are true about enzyme-catalyzed reactions? A. The reaction is faster than the same reaction. B. The free energy change of the reaction is opposite from the reaction in the absence of the enzymes. C. The reaction always goes in the direction toward chemical equilibrium. D. A and B only E. A, B and Carrow_forward
- Cells use ATP to drive endergonic reactions because a. ATP is the universal catalyst. b. energy released by ATP hydrolysis makes ΔG for coupled reactions more negative. c. energy released by ATP hydrolysis makes ΔG for coupled reactions more positive. d. the conversion of ATP to ADP is also endergonic.arrow_forwardDuring a redox reaction the molecule that gains an electron has been a. reduced and now has a higher energy level. b. oxidized and now has a lower energy level. c. reduced and now has a lower energy level. d. oxidized and now has a higher energy level.arrow_forwardChoose the best description of an enzyme: (a) It allows a chemical reaction to proceed extremely fast. (b) It increases the rate at which a chemical reaction approaches equilibrium relative to its uncatalyzed rate. (c) It makes a reaction thermodynamically favorable.arrow_forward
- Choose the catabolic reaction. a. breaking down a complex molecule b. synthesizing a complex molecule c. CO2 and H2O combining to form carbonic acid.arrow_forwardWhen an enzymatic reaction is in progress, do you expect to see happen to the amount of substrate? A It will increase as the reaction proceeds. B It will decrease as the reaction proceeds. C The amount will not change as reaction proceeds. D It is not possible to predict what will happen to it as the reaction proceeds.arrow_forwardWhat does an enzyme change relative to an uncatalyzed reaction? a) The rate of the reaction. b) The free energy change of the reaction. c) The size of the active site. d) The pH. e) The equilibrium constant.arrow_forward
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