1. Each organism has a unique combination of characteristics encoded in molecules of

2. DNA

3. The primary function of DNA is to

4. Store and transmit genetic information

5. All of the following are true about the structure of DNA except

6. Short strands of DNA are contained in chromosomes inside the nucleus of a cell
Every DNA nucleotide contains a sugar, a phosphate group, and a nitrogen base
DNA consists of two strands of nucleotides joined by hydrogen bonds
The long strands of nucleotides are twisted into a double helix

7. Molecules of DNA are composed of long chains of

8. nucleotides

9. Which of the following is not part of a molecule of DNA?

10. ribose

11. A nucleotide consists of

12. A sugar, a phosphate group, and nitrogenous base

13. The part of the molecule for which deoxyribonucleic acid is named the

14. sugar

15. Purines and pyridines are

16. Bases found in nucleotides

17. Chargaff’s rules, the base-pairing rules, state that in DNA

18. The amount of adenine equals the amount of thymine
The amount of guanine equals the amount of cytosine
D Both a and b

19. The base-pairing rules states that the following are base pairs in DNA

20. Adenine-thymine; guanine-cytosine

21. ATTG:TAAC::

22. GTCC:CAGG

23. The addition of nucleotides to form a complementary strand of DNA

24. Is catalyzed by DNA polymerase

25. Which of the following is not true about DNA replication?

26. Is the responsibility of the complementary DNA mutagens

27. During DNA replication, a complementary strand of DNA is made for each original DNA strand. Thus if a portion of the original strand is CCTAGCT, then the new strand will be

28. GGATCGA

29. The enzymes responsible for adding nucleotides to the exposed DNA template bases are

30. DNA polymerase

31. The function of tRNA is to

32. Transfer amino acids to ribosomes

33. Which of the following types of RNA carries instructions for making proteins?

34. mRNA

35. RNA differs from DNA in that RNA

36. Is sometimes single-stranded
Contains a different sugar molecule
Contains the nitrogenous base uracil
All of the above

37. Which of the following is not found in DNA?

38. uracil

39. RNA is chemically similar to DNA except that its sugars have an additional oxygen atom, and the base thymine is replaced by a structurally similar base called

40. Uracil

41. In RNA molecules, adenine is complementary to

42. uracil

43. During translation, a ribosome binds to

44. mRNA

45. Each of the following is a type of RNA except

46. A carrier RNA

47. During transcription,

48. RNA is produced

49. Transcription proceeds when RNA polymerase

50. Binds to a promoter on a strand of DNA

51. Transcription is the process by which genetic information encoded in DNA is transferred to an

52. RNA molecule

53. Each nucleotide triplet in mRNA that specifies a particular amino acid is called a

54. codon

55. During translation, the amino acid detaches form the transfer RNA molecule and attaches to the end of a growing protein chain when

56. The transfer RNA anticodon is paired up with the messenger RNA codon

57. The transfer of genetic material from one cell to another, which Fredrick Griffith studied, is called

58. transformation

59. An error in DNA replication can cause

60. Mutations
Cancer
Genetic variations
All of the above