Spr02T1 - Biochemistry 694:301 First Exam Dr. Deis Wed....

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Biochemistry 694:301 Name___________________________ First Exam Dr. Deis Last 5 digits of ID _________________ Wed. Feb. 20, 2002 Row Letter ____ Seat Number ______ This exam consists of two parts. Part I is multiple choice. Each of these 25 questions is worth two points. Answer the Part I questions on this sheet, below. Answer the Part II questions on the question pages. Please use BLOCK CAPITAL letters like this --- A, B, C, D, E. Not lowercase! 1. ______ 10. ______ 18. ______ 2. ______ 11. ______ 19. ______ 3. ______ 12. ______ 20. ______ 4. ______ 13. ______ 21. ______ 5. ______ 14. ______ 22. ______ 6. ______ 15. ______ 23. ______ 7. ______ 16. ______ 24. ______ 8. ______ 17. ______ 25. ______ 9. ______ GRADE: Part I Total _______ Part II: II-1 _______ II-2 _______ II-3 _______ II-4 _______ II-5 _______ Part II Total _______ _______
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Name ________________________ 1. On the scale of the CPK models used in class, i.e. magnification of 10 8 , an average amino acid would be about the size of a A. a house D. an apple B. a truck E. a marble C. a large pillow 2. Entropy is a measure of A. bond energies D. disorder B. heat content E. none of the above C. molecular weight 3. In CPK models, the color of nitrogen is A. brown D. white B. blue E. black C. red 4. Stanley Miller wrongly assumed what? A. amino acids formed in early Earth atmosphere B. lightning is simulated by a spark C. the Earth had a reducing atmosphere D. nucleotides are easily synthesized E. all of the above 5. Ion pumps use chemical energy (ATP) to pump certain ions out of a cell. If the concentration of ions outside the cell becomes extremely high, what happens? A. ion flow simply stops D. ions react with each other B. ions flow in making ATP E. ions lose their charge C. ions diffuse in through membrane 6. Secondary structures are generally stabilized by A. salt bridges D. hydrophobic forces B. magnetism E. peptide H bonds C. van der Waals forces 7.* Examine the amino acids drawn below: A. #1 is L, #2 is L C. #1 is D, #2 is L B. #1 is L, #2 is D D. #1 is D, #2 is D 8. The "beta sheet" would be located where on a standard Ramachandran plot? A. top left corner
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Spr02T1 - Biochemistry 694:301 First Exam Dr. Deis Wed....

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