- b 2. c 3. b 4. b 5. b
- c 7. a 8. a 9. d 10. b
- d 12. c 13. a 14. c 15. d
- a 17. b 18. b 19. b 20. d
- d 22. b 23. a 24. a 25. c
- a 27. a 28. c 29. d 30. c
- b 32. d 33. a 34. c 35. a
- b 37. b 38. b 39. a 40. b
- a 42. b 43. c 44. c 45. c
- d 47. c 48. a 49. c 50. b
- a 52. b 53. b 54. b 55. a
- b 57. b 58. b 59. d 60. c
- a 62. b 63. c
1.Sol:
9.Sol: The will end up in the pellet after
centrifugation.
11.Sol: Statement D is true.
m The base pairing of guanine (G) and
cytosine (C) is just the same in DNA and
RNA. So in RNA the important base pairs
are: adenine (A) pairs with uracil (U);
guanine (G) pairs with cytosine (C)
m The lac repressor protein binds to the
operator and blocks RNA polymerase from
binding to the promoter and transcribing
the operon. ... The promoter is the binding
site for RNA polymerase, the enzyme that
performs transcription. The operator is a
negative regulatory site bound by the lac
repressor protein.
m Human genome has approximate 30,000
genes
m Hemophilia A and hemophilia B are
inherited in and X-linked recessive pattern.
The genes associated with these conditions
are located on the Xchromosome, which is
one of the two sex chromosomes. In males
(who have only one Xchromosome), one
altered copy of the gene in each cell is
sufficient to cause the condition.- Sol:
m Eukaryotic chromosomes are generally
much bigger than those of prokaryotes.
m In eukaryotic cells, replication begins at
dozens, or even hundreds, of places on
the DNA molecule, proceeding in both
directions until each chromosome is
completely copied.
m Specific protein called DNA A binds to this
site causing double strands to separate.
m As the 2 DNA strands open at the origin,
replication bubbles are formed. Eukaryotes
have many replication bubbles