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Exergonic reactions
a. are spontaneous.
b. have a negative ΔG value.
c. release energy.
d. All of these are correct.
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- When electromagnetic energy is absorbed, it can be converted to which of the following? Group of answer choices a) Chemical energy as in photosynthesis. b) Electrical energy as with solar collectors c) Sensible heat d) All of the above e. None of the aboveYou 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?Exergonic reactionsa. release potential energy b. consume energy c. form bonds d. occur only outside the cell
- Reactions that release free energy area. exergonic.b. spontaneous.c. endergonic.d. endothermic.e. both a and b.Look at the two figure parts (a) and (b) from figure and explain what processes are depicted and what the resultsof the reactions will be.Coupled reactionsa. are endergonic overall.b. both synthesize and break down ATP.c. are catalyzed by the same enzyme.d. end with reactants that contain more energy than theirproducts.
- During 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.How do catalytic converters work? A They remove harmful sulfur dioxide from smokestacks. B They store harmful emissions from cars to be disposed of later. C They cause exhaust gases from cars to react with the catalyst. D They convert carbon dioxide into carbon monoxide and water.enzymes are efficient catalysts because they can do which of the following? A) catalyze reactions that ottherwise would not occur. B) decrease the free energy of activation of reactions, C) decrease the standard free energy change o reactions , D) prevent the conversion of product to substrate, E) shift the equilibrium of reactions toward more complete inversion of product
- The oxidation of NADH is favorable because it involves: a) Separation of like charges. b) Conversion of non-polar to polar bonds. c) Increased resonance. d) Conversion of liquid to gas.A lawnmower uses gasoline for fuel. The lawnmower has a moving blade, makes lots of noise, and has a few lights on it. The engine of the lawnmower gets very hot. A. What kinds of energy transformations are happening in the lawnmower? B. What does the law of conversation of energy tell 6ou about the energy used by the lawnmower?Enzymes (a) speed up reactions that would otherwise occur much more slowly. (b) spur reactions that would otherwise never occur. (c) provide energy for anabolic but not catabolic pathways. (d) are consumed during the reactions they catalyze.
