Exam1KEYsept07(2)

Exam1KEYsept07(2) - have own prokaryote-type ribosomes rER...

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Bio 311C Exam 1 – September 25, 2007 Brief Key and Distribution of Scores 1. D 6. E 11. B 16. C 21. E 26.(a) (3 pts) 2. C 7. D 12. C 17. A 22. C 3. A 8. A 13. E 18. E 23. A 4. D 9. B 14. A 19. C 24. C 5. C 10. C 15. C 20. B 25. B 26 (b) (3 pts) 27 (a) peptide bond; (b) e.g., ionic bonds between R groups, loss of tertiary structure; (c) chaperone 28. (5 pts) 29 (a) quaternary (b) ionic bond or disulfide bridge between R groups (c) a pit or groove with surface R groups of positive charge [note: positive charge is automatically polar] (d) (3 pts) made at ribosome, then rough endoplasmic reticulum, then Golgi [could have secretion vesicle] 28c: note: an H covalently bonded to a C (d-2 nd ) (1 pt) the disease affects liver cells only. cannot be in a hydrogen bond 30 (8 pts) structure here > (a) 13; (b) unsaturated; (c) liquid 31. (3 pts) double membrane, have their own loop DNA (prokaryotic-type), 32. rER processes proteins (does not make protein)
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Unformatted text preview: have own prokaryote-type ribosomes, rER attaches sugars, makes membrane proteins reproduce by fission sER main site of lipid synthesis, stores Ca++ 33. 34.(7 pts) (a) examples: hydroxyl OH, amino NH 2 , phosphate PO 4 ; (b) nucleic acids because has 5-carbon sugars, C-N ring (base), phosphate Total points possible – 50 multiple choice; page 4 – 18 pts, page 5 – 18 pts, page 6 – 14 pts Point values generally 2 points for each answer, unless specified otherwise above (in parentheses) Be sure to go over the key for these questions: 1, 4, 9-11, 14, 18, 20, 26a, 27a, 29c (1 st d) 30bc, 31, 34 Multiple Choice -mean score 35/50 Total exam -mean score 71.8/100 Distribution of Scores A 88+ 17% of class B 78-87 25% of class C 58-77 40% of class D 45-57 11% of class F <45 Exam 1 scores 5 10 15 20 25 30 35 40 Score Range Series1...
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This note was uploaded on 06/18/2008 for the course BIO 311C taught by Professor Satasivian during the Fall '08 term at University of Texas.

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