AS Q01 G hr

AS Q01 G hr - d. All of the above (4) 4. Differential media...

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357 Introduction to Microbiology Cadet ________________________ Quiz 1 30 points G hour APPROVED SOLUTION Academic term 2008-1 (4) 1. All prokaryotic and eukaryotic cells share the following characteristic: a. all have a cell wall. b. all have a cell membrane. c. all have a nucleus. d. all have flagella. (4) 2. Which of the following is NOT one of Koch’s postulates? a. A pathogen is found in a healthy organism, but not a sick one. b. The pathogen can be grow in pure culture. c. The organism can be used to infect a healthy organism and it gets sick. d. The pathogen can be reisolated from the newly infected organism. (4) 3. Aseptic techniques allow a. culture media to be handled without accidental contamination b. pure (axenic) cultures can be maintained and transferred without accidental contamination c. laboratory personnel can be maintained without illness
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Unformatted text preview: d. All of the above (4) 4. Differential media allow a. the growth of specific type(s) of bacteria and inhibition of others. b. a particular type of organism(s) can be distinguished from other organisms. c. all organisms to grow at the same rate. (4) 5. How many grams of NaCl (58.44 g/mole) must be added to 0.100 L to obtain a 0.100 mM solution? 0.100 L 0.100 mmol 0.05844 g = 0.0005844 g L mmol (4) 6. What is the name of the compound you were assigned for the enrichment experiment? Extra credit (3 points) Draw the structure. (6) 7. Explain how a pure culture is obtained by the use of streak plates. A loopful of a sample containing bacteria is place on an agar plate. Utilizing a sterile loop, the bacteria are physically separated such that individual bacteria can grow to form non-overlapping colonies....
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