2008 FINAL KEY

2008 FINAL KEY - BILD 3, Spring 2008. Dr. Kohn Section _...

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BILD 3, Spring 2008. Dr. Kohn Final Page 1 Section _______________________ Name_______________________ Directions: There are 12 pages in this exam, not including this cover sheet. Please put your name on each page. Only exams written in ink will be accepted for regrades. You can use the space below the line on this page as scratch paper, and there is additional space for scratch on the last page. There are 65 questions. Please be sure your exam is complete. Read each question carefully. Think before you write and confine your answer to the space provided. We will collect exams promptly at 10:50. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8. Page 9. Page 10. Page 11. Page 12. Page 13. Page 14. Total (Space below this line an on the reverse side may be used for scratch)
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BILD 3, Spring 2008. Dr. Kohn Final Page 2 Section _______________________ Name_______________________ Course grade: ________
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BILD 3, Spring 2008. Dr. Kohn Final Page 3 Section _______________________ Name_______________________ 1. (6pts) What features of RNA make it more likely to be the original genetic material of life and what feature of DNA might have led to its selection as the genetic material of virtually all forms of life on earth today? RNA – can synthesize RNA and catalyze other reactions DNA – More stable repository of genetic information 2. (4pts) Life would be more /less (circle one) likely to originate in the presence of high concentrations of oxygen. Why? (one sentence) Oxygen tends to help break down organic molecules. 3. (4pts) Mass extinctions of large mammals occurred in Australia about 40,000 years ago and in North and South America about 12,000 years ago. What is the most likely explanation for these extinction events and why didn’t they occur at the same time? (Two sentences max) Extinctions in both places likely to have been caused by human exploitation. Humans migrated into Australia and North America at different times. 4. (4pts) The recent catastrophic earthquake in China was just one product of the stress caused by the Indian sub-continent pushing up into Asia. The Himalayas are another product. The movement of continents over geological time scales is called _ Plate tectonics _________ (two words) and was first propsed by __ Wegener _________ (name).
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BILD 3, Spring 2008. Dr. Kohn Final Page 4 Section _______________________ Name_______________________ 5. (2pts) When similar taxa are found on separate continents that were once connected, and when they are shown to have diverged when the continents split, we call this pattern an example of ___ vicariance biogeography _______________ (two words). 6. (2pts) After observing the amount of uplift caused by a single earthquake in Chile, Darwin calculated how long it might take for the Andes to form. In doing this, Darwin was applying Lyell’s principle of __ gradualism _________________ (one word). 7. (2pts) Name one non-geologist whose writings strongly influenced Darwin.
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This note was uploaded on 04/11/2010 for the course BILD BILD 3 taught by Professor Woodruff during the Spring '08 term at UCSD.

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2008 FINAL KEY - BILD 3, Spring 2008. Dr. Kohn Section _...

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