Bio 219 WVU Exam 2 with Questions and Answers

Bio 219 WVU Exam 2 with Questions and Answers Which of the following statements is TRUE? a.Cells create energy, in the form of ATP. b.Exergonic reactions are always fast because they give off so much energy. c. Endergonic reactions can proceed by coupling them to exergonic reactions. ANSWER c.Endergonic reactions can proceed by coupling them to exergonic reactions. Metabolism makes a collection of cell components alive ANSWER Metabolism: chemical rxns that sustain life Most energy storage & use occurs via red-ox chemistry ANSWER Oxidation is loss (highly exergonic) Reduction is gain (highly endergonic) Most reduced molecules have the _____ hydrogen ANSWER most Most oxidized molecules have the ________ hydrogen ANSWER fewest Red-ox reactions are _________ coupled ANSWER always In order to make glucose, what must be true? ANSWER carbon dioxide is reduced -energy will come from the sun