BILD3midterm

BILD3midterm - BILD3 Midterm Fall 2005 Midterm 1...

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BILD3 Midterm – Fall 2005 Midterm 1 Instructions: 1. Be sure to write your name and section on the first page. 2. Write in pen. 3. Read over the instructions carefully . 4. Count to make sure you have all 11 the pages (plus this cover sheet). 5. No points will be given to any answer that is illegible. 6. Show your work for partial credit, when appropriate. 7. On the short answers, explain your answers and give key terms and concepts for full credit. 8. Use this top page to cover your answers. 9. You will have the full 80 minutes. 10. If you finish the exam in the last 5 minutes, you need to stay until the class is dismissed. This will allow other students to concentrate in the last 5 minutes and minimize the chaos. This exam has three parts. Be sure to allocate your time among these sections wisely. Part 1: Multiple choice (40 points total) Part 2: Matching and fill-in-the-blank (60 points total) Part 3: Short answer (100 points total) There are 5 versions of the exam and are random with respect to color. Do NOT cheat off a neighbor. We can tell. GOOD LUCK.
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1 Name ______________________________ Section _______________________ Exam: version 1 (day & time) PART 1 Questions 1-20 are multiple choice. Clearly WRITE your answer in the blanks provided. Each question is worth 2 points (40 points total). _____1. Today scientists theorize that life on Earth may have first arose: a) from outer space by means of a meteor, comet, or asteroid. b) by special creation. c) spontaneously from nonliving organic molecules. d) either A or C. e) None of the above. _____2. The first signs of life appeared on Earth about ____ years ago. a) 10-20 billion b) 4.2 billion c) 3.7 billion d) 100 million e) 65 million _____3. The most likely candidate molecule for the earliest the catalyst (building block) of life is: a) DNA b) RNA c) protobionts d) liposomes e) cyanobacteria _____4. Which of the following pieces of evidence most strongly supports the common origin of all life on earth? a) All organisms require energy b) All organisms use essentially the same genetic code c) All organisms reproduce d) All organisms show heritable variation e) All organisms have undergone evolution _____5. Place the following events in order from earliest to latest: 1. Production of O 2 by cyanobacteria 2. Synthesis of small organic molecules 3. Origin of self-replication 4. Packaging into “protobionts” with membranes 5. Joining of molecules into polymers a) 1, 2, 3, 4, 5 b) 1, 2, 3, 5, 4 c) 1, 2, 5, 4, 3 d) 2, 3, 5, 4, 1 e) 2, 5, 4, 3, 1 f) 2, 5, 3, 4, 1 _____6. Suggestive evidence that Europa may have extraterrestrial life does not include: a) Evidence of several meteorite collisions b) A stable environment c) The presence of water d) A reducing environment e) A warm core
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2 _____7. Which is not an explanation for the explosive appearance of animal forms in the fossil record during the Cambrian? a)
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This note was uploaded on 04/14/2008 for the course BILD 3 taught by Professor Wills during the Spring '07 term at UCSD.

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BILD3midterm - BILD3 Midterm Fall 2005 Midterm 1...

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