Exam2Key - Copy - BCOR 11 Exploring Biology Exam 2 Name...

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BCOR 11 Exploring Biology Exam # 2 Name ________________________ Section ___________ For this Multiple Choice Exam you should record your choice of the best answer for each question on the SCANTRON sheet. You must use a number 2 pencil for recording to insure proper machine reading of your choices. Remember to print your name on the Scantron and Exam paper. 1) Which of the following statements correctly describe(s) catabolic pathways? A) They do not depend on enzymes. B) They consume energy to build up polymers from monomers. C) They release energy as they degrade polymers to monomers. D) They lead to a net increase in free energy. E) Both A and B 2) Which of the following statements is not representative of the second law of thermodynamics? 3) Which of the following forms of energy is least available to accomplish cellular work? 4) What is the change in free energy of a system at chemical equilibrium? 5) In general, the most important way ATP energizes a cellular process is by A) releasing heat upon hydrolysis. B) acting as a catalyst. C) coupling free energy released by ATP hydrolysis to free energy needed by other reactions. D) lowering the activation energy of a chemical reaction. E) binding directly to the substrate(s) of the enzyme.
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6) When 10,000 molecules of ATP are hydrolyzed to ADP and P i in a test tube, about twice as much heat is liberated as when a cell hydrolyzes the same amount of ATP. Which of the following is the best explanation for this observation?
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