Microbiology Exam 2 practice Tests 208 Questions

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1. Experiments designed by suggested that living cells caused fermentation of sugar to produce alcohol. A. Pasteur B. Koch C. Wohler D. Fleming 2. Buchner showed that ground-up yeast cells were ... able to convert sugar to alcohol. The components of the mixture that were responsible for this transformation were A. DNA molecules. B. enzymes. C. lipids. D. carbohydrates. 3. Free energy A. includes the energy lost as heat. B. is the amount of energy gained by breaking bonds of a chemical. C. differs for a given reaction depending on the number of steps involved. 4. Chemoorganotrophs A. may use substrate-level phosphorylation to produce ATP. B. may use oxidative phosphorylation to produce ATP. C. utilize an electrochemical gradient. D. all of the above are true 5. Fermentation A. uses an inorganic molecule as the final electron acceptor. B. uses an organic molecule as the final electron acceptor. C. results in the production of a large amount of ATP. 6. Pyruvate can be metabolized along two major routes. They are A. oxidation and reduction. B. fermentation and respiration. C. metabolism and anabolism. 7. Enzymes speed up reactions by A. raising activation energy. B. reducing entropy. C. lowering activation energy [Show More]

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