january key - Biology 12 January 1999 Provincial...

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991bik - 1 - February 23, 1999 Biology 12 January 1999 Provincial Examination A NSWER K EY / S CORING G UIDE Curriculum: Organizers Sub-Organizers 1. Cell Biology 2. Cell Processes and Application 3. Human Biology A, B, C, D E, F, G, H I, J, K, L, M, N, O, P Part A: Multiple Choice Q K C CO PLO Q K C CO PLO 1. D K 1 A1, 3 26. B U 3 K1 2. C H 1 A1; H1 27. B H 3 K2 3. D U 1 A1 28. D U 3 K1, 6 4. D H 1 A1, 2; G5 29. C U 3 L1 5. C K 1 B3 30. D K 3 L1 6. C H 1 B3 31. C U 3 L1, 5 7. C U 1 C1, 2 32. D K 3 L7 8. D K 1 C2; D1 33. A U 3 L8; J2 9. B K 1 C2, 8; G1 34. D U 3 N2 10. C U 1 C3 35. C K 3 N3 11. A K 1 C9 36. A K 3 N4 12. D K 1 C2, 12 37. A U 3 N4 13. B H 1 D2 38. A K 3 O1 14. B K 2 G1 39. B U 3 O2 15. A H 2 G3, 4 40. C H 3 O2, 4, 5 16. C H 2 G4, 8 41. D E L E T E D 17. C H 2 G6 42. D K 3 O4 18. D U 2 H3 43. D K 3 P1 19. D U 3 I1, 2 44. C K 3 P1 20. C U 3 I1, 2 45. D K 3 P3 21. D U 3 I1, 9 46. B K 3 P4 22. A U 3 I2 47. C H 3 P5, 6 23. B U 3 I2 48. C H 3 P9, 10 24. B U 3 I2 49. A U 3 P10 25. C K 3 J1 50. B K 3 P7, 9, 10 Multiple Choice = 50 marks
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991bik - 2 - February 23, 1999 Part B: Written Response Q B C S CO PLO 1. 1 K 4 1 D1 2. 2 U 3 2 E1 3. 3 U 4 2 F4 4. 4 H 8 2 H6; I2, 4 5. 5 U 10 3 J2, 5, 6 6. 6 U 3 3 L2 7. 7 U 8 3 M3, 4 8. 8 U 6 3 O1, 2 9. 9 K 4 3 P7 Written Response = 50 marks Multiple Choice = 50 (50 questions) Written Response = 50 (9 questions) E XAMINATION T OTAL = 100 marks L EGEND : Q = Question Number B = Score Box Number S = Score K = Keyed Response C = Cognitive Level CO = Curriculum Organizer PLO = Prescribed Learning Outcome
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991bik - 3 - February 23, 1999 PART B: WRITTEN RESPONSE Value: 50 marks Suggested Time: 75 minutes INSTRUCTIONS: 1. Use a pen for this part of the examination. 2. Write your answers in the space below the questions. 3. Organization and planning space has been incorporated into the space allowed for answering each question. 4. You may not need all of the space provided to answer each question. 1. Describe the structure of DNA. (You may use a labelled diagram to answer this question.) (4 marks) It consists of two polynucleotide strands. It is a double helix OR ladder configuration. Its sugar is deoxyribose. It has bases A, T, C and G. There is hydrogen bonding between the complementary bases (A–T, C–G) on the two polynucleotides. It is composed of nucleotides. Each nucleotide is composed of sugar, phosphate and base. It has a sugar-phosphate backbone. any four for 1 mark each
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991bik - 4 - February 23, 1999 2. State one role for each of the following molecules in the process of protein synthesis.
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