General Biology (Bio 11A) Spring 2012
Exam 1 Key
MULTIPLE CHOICE QUESTIONS.
1. C
8. D
15. C
22. B
29. B
2 C
9. A
16. C
23. E
30. C
3. C
10. D
17. B
24. A
31. C
4. B
11. D
18. B
25. E
32. B
5. D
12. D
19. C
26. C
33. B
6. E
13. D
20. E
27. E
34. B
7. E
14. A
21. E
28. E
35. D
TRUE/FALSE.
36. T
39. F
42. F
45. T
37. T
40. T
43. T
46. F
38. T
41. T
44. T
47. T
SHORT ANSWER
1.
Ionic bonds are attractions between ions of opposite charge. Example is NaCl. Covalent bonds occur
when two atoms share a pair of electrons. Ex is H2 (hydrogen gas)
2.
A protein in the ER can be packaged inside a transport vesicle and be moved to the golgi apparatus.
Once there it can be further modified and then packaged again into another vesicle. That vesicle can
then travel to the cell membrane and merge with it, When it does that, the protein will end up on the
outside of the cell, without ever having to cross a membrane.
See diagram in book showing the the endomembrane system and exocytosis.
1