LS1W09Exam2AKey

LS1W09Exam2AKey - LS1 Winter09 Name& ID Page 1 of 10...

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Unformatted text preview: LS1 Winter09 Name & ID________________________________ Page 1 of 10 VERSION A • Don’t open your exam until instructed to. • Write your name and student number on every page of the test before handing in the test (you will lose 10 points if you don’t!). • Use a pencil on the multiple choice, and a pen on the short answer. • Mark scantrons neatly, one answer per question. Erase changes completely. • Answer written questions in space provided. Do not write on the back. • Only answers on the front side of pages will be graded. NO EXCEPTIONS. • If you must cross something out and run out of space to answer the question in the space provided, you must request another blank exam page. • Absolutely no electronic devices at your desk. • No food, no bottle with labels. • Use a pencil on the multiple choice, and a pen on the short answer. • If you need to use the restroom, turn in your exam to a TA. Only one student may leave the room at a time. You may not leave the room with any electronic devices. • Circle which TA & Section you are in o 1A, 1E, 1H – HILTON YAMAGUCHI o 1B, 1F, 1G – ASIF RAZEE o 1D, 1J, 1L – RAUL SEDANO o 1C, 1I, 1K – JONATHAN SIM • Good luck! I hereby certify that I have neither given nor received any aid on this exam, and that I have read and understand the instructions above. Sign your name here:_____________________________________ LS1 Winter09 Name & ID________________________________ Page 2 of 10 PUT YOUR NAME ON EVERY PAGE OF THE EXAM BEFORE STARTING. Exam is 200 pts total Part 1 Multiple Choice. 25 questions, 5 pts each 1. You need to identify the major type of bacteria living on the shower curtain in your bathroom and find out what they use as a food source. What is the most efficient method for answering this question? a. enrichment culture b. direct sequencing c. Enrichment culture and direct sequencing are equally efficient methods. 2. A mad scientist invents a ray that can resize organisms. She zaps a mouse, isometrically enlarging it to the size of an elephant. Which of the following would not happen a. The mega-mouse’s legs would break from not being able to support its weight b. It would eat much more food than an elephant of the same size c. It would freeze to death because of the change in SA/V d. Its lung surface area would no longer be sufficient to keep up with oxygen demand 3. The purple non-sulfur bacterium Rhodospirillum grows best as a photoheterotroph. What are the most favorable sources of energy and carbon for this bacterium? a. methane and CO2 b. light and CO2 c. fructose and light d. any of the above 4. Which of the following is a correct element of alternation of generations?...
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This note was uploaded on 06/03/2011 for the course LS 1 taught by Professor Thomas during the Spring '05 term at UCLA.

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LS1W09Exam2AKey - LS1 Winter09 Name& ID Page 1 of 10...

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