LS1S09Exam2AKey

LS1S09Exam2AKey - LS1 Spring 09 Name ID_KEY VERSI ON A Dont...

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LS1 Spring 09 KEY ______________ Page 1 of 8 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 James Holmquist o Sara Painter o Dan Stahler o Jeff Wolf o Deb Pires • 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:_____________________________________
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LS1 Spring 09 KEY ______________ Page 2 of 8 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. An elephant and a mouse are both running in full sunlight, and both overheat by the same amount above their normal body temperatures. When they move into the shade and rest, which animal will cool down faster? a. The elephant will because it has the higher surface area/volume ratio. b. The elephant will because it has the lower surface area/volume ratio. c. The mouse will because it has the higher surface area/volume ratio. d. They will cool at the same rate because they overheated by the same amount. 2. Which one of the following is not a good strategy for increasing the surface area relative to the volume? a. Enlarge and make more spherical . b. Increase the amount of branching. c. Increase the amount of folding. d. Make flatter. e. None of these are good strategies. 3. Which term best describes an animal that, although generating a significant amount of heat through metabolism, nonetheless does not maintain a constant body temperature? a. homeothermic endotherm b. heterothermic ectotherm c. homeothermic ectotherm d. heterothermic endotherm 4. Bacteria participate in the nitrogen cycle through which mechanism? a. nitrogen fixation b. nitrification c. denitrification d. decomposition e. all of the above 5. What is the function of the gametangia in mosses and ferns? a.
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LS1S09Exam2AKey - LS1 Spring 09 Name ID_KEY VERSI ON A Dont...

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