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Material Type: Exam; Professor: Kearns; Class: MICROBIOLOGY; Subject: Biology; University: Indiana University - Bloomington; Term: Fall 2011;
Typology: Exams
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Microbiology M250 Name: ___________________________ Exam 2 October 19th^2011 MULTIPLE CHOICE (2 points each)
23-26 Batch growth. Three different bacteria (A, B, and C) are growing at 37°C in separate test tubes with identical media. For questions 23-26, limit your answers only to the 8 hour window of measurement shown in the graph below. a. Bacterium A b. Bacterium B c. Bacterium C d. Cannot tell from the graph C 23. Which bacterium has the greatest yield? B 24. Which bacterium has the longest lag phase? D 25. Which bacterium can grow at the highest temperature? C 26. Which bacterium has the slowest growth rate? 27-31. Cellular proteins: Correctly match the protein below with the statements in questions 27-31. Answers may be used more than once. a. RelA b. Catalase c. Noc d. TolC e. Transketolase B 27. This protein protects the cell from oxygen damage. C 28. This protein inhibits cell division. A 29. This protein binds to the ribosome. A 30. This protein is involved in physiological adaptation to stationary phase. C 31. This protein binds to DNA. TRUE OR FALSE (1 point each) a. True b. False A 32. Growth rate can only be calculated in exponential phase. A 33. All chemical reactions are reversible. B 34. Enzymes in the cell have evolved to operate at Vmax. B 35. Spectrophotometry counts the number of viable cells in a population. A 36. A protein that prevents another protein from folding is called a chaperone. A37. In a chemostat, the bacterial growth rate decreases as dilution rate decreases.