sample_midterm_1_-_2009 - MIC 140 Bacterial Physiology Name...

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MIC 140 Bacterial Physiology Name _________________________________________________ Midterm examination 1 For your protection, put your name on all pages of this examination and on your SCANTRON together with your I.D. number. There are eight pages to this examination, including the cover page, plus appendages. Answer the questions on pages 2-5 (PART A) on the SCANTRON. Answer questions on pages 6-8 (PART B) in the space provided below the question and the attached graph papers. Hand in both the exam and the SCANTRON THIS IS EXAM FORMAT A Put this letter on your SCANTRON
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Mic 140 Midterm exam 1 NAME___________________________________________ PART A. Answer the questions using the SCANTRON answer sheet. I. Direct multiple choice, two points each, choose the best answer . 1. Microorganisms appear to be goal directed. The goal(s) of a microorganism is (are) to: A. make two cells from one as rapidly as possible. B. adjust its metabolic pathways so that it can survive. C. obtain from the environment a reduced organic compound that can serve as both carbon and energy source. D. A and B E. A and C 2. Which of the following hierarchies in trophic level classification reflects the most nutritionally dependent hierarchy in the context of carbon and energy acquisition: A. organoheterotroph > organoautotroph > photoheterotroph > lithoheterotroph > photoheterotroph. B. photoautotroph > lithoautotroph > photoheterotroph > lithoheterotroph > organoheterotroph. C. photoautotroph > photoheterotroph > lithoautotroph > lithoheterotroph > organoautotroph. D . organoheterotroph > lithoheterotroph > photoheterotroph > lithoautotroph > photoautotroph. E. lithoautotroph > photoautotroph > lithoheterotroph > photoheterotroph > organoheterotroph. 3. In general, E . coli and similar microbial cells contain: A. about equal mixtures of polymers, soluble monomers and dimers B. about 96% macromolecules on a dry weight basis. C. more combined RNA and DNA molecules than they do protein D. more different kinds of lipids than they do nucleic acid polymers E. all of the above 4. E. coli appears to contain about 1,000 different proteins and 400 different mRNA at any one point in time while growing in glucose minimal medium; this implies that: A. protein turnover is slower than mRNA. B . one mRNA may contain information for the synthesis of more than one protein. C. genes are differentially expressed depending on the growth conditions.
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This note was uploaded on 12/02/2009 for the course MIC 140 taught by Professor Meeks,singer during the Spring '09 term at UC Davis.

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sample_midterm_1_-_2009 - MIC 140 Bacterial Physiology Name...

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