2. PASS Objectives Content Standard 2.1 Cells function according to the information contained in the master code of DNA (i.e., cell cycle, DNA to DNA, and DNA to RNA).

4. The double helix shape of the DNA molecule was first described by Watson and Crick in 1953.

14. #1 DNA - 4 min

15. DNA Replication The process of duplicating a DNA molecule.

16. DNA Replication The DNA molecule begins to unzip at one end...

17. DNA Replication then each side "replicates" the missing part...

18. DNA Replication producing two molecules identical to the original.

19. #2 Replication - 7 min

20. If a cell was the size of the earth...

21. a chromosome would be the size of a country...

22. a piece of chromosome would be the size of a state...

23. a gene would be the size of a city...

24. and nucleotides (A, T, C, & G) would be the size of people.

27. Proteins are involved in ALL biological processes.

29. is different from

35. #3 RNA - 3 min

38. A chicken has 78 Chromosomes

39. A cat has 38 Chromosomes

40. An earthworm has 36 Chromosomes

41. A horse has 64 Chromosomes

42. Wheat has 42 Chromosomes

43. A white-tailed deer has 42 Chromosomes

44. An amoeba has 13 Chromosomes

45. Ophioglossum reticulatum, a species of fern, has the largest number of chromosomes, 1,260!

46. The smallest number of chromosomes would be 1, the circular chromosome found in most bacteria.

47. Gene from the male Gene from the female

48. ALLELES are different forms of a gene for a specific trait.

49. They may be the same, or different...

50. but they are always found at the same locus on homologous chromosomes.

52. What does this karyotype tell you?

53. How is this one different from the first?

54. How is this one different from both?

57. DNA stands for _____

58. DNA DNA stands for _____ Deoxyribonucleic Acid

59. The shape of a DNA molecule is a _____

60. DNA double helix The shape of a DNA molecule is a _____

61. The four nucleotides in DNA are _____

62. DNA A C T G The four nucleotides in DNA are _____

63. A always pairs with _____

64. DNA T A always pairs with _____

65. DNA is a molecule composed of repeating units, making it a _____

66. DNA Polymer DNA is a molecule composed of repeating units, making it a _____

67. DNA is normally found in a cell in long strands known as _____

68. DNA Chromatin DNA is normally found in a cell in long strands known as _____

69. Chromosomes are only found in cells when they are about to _____

70. DNA Divide Chromosomes are only found in cells when they are about to _____

71. Segments of a DNA molecule that code for a particular protein are called _____

72. DNA Genes Segments of a DNA molecule that code for a particular protein are called _____

73. The process of duplicating a DNA molecule is called _____

74. DNA Replication The process of duplicating a DNA molecule is called _____

75. DNA makes RNA by a process called _____

76. DNA Transcription DNA makes RNA by a process called _____

77. RNA makes proteins by a process called _____

78. DNA Translation RNA makes proteins by a process called _____

79. The sugar found in RNA is _____

80. DNA Ribose The sugar found in RNA is _____

81. Instead of the nucleotide thymine, RNA has _____

82. DNA Urasil Instead of the nucleotide thymine, RNA has _____

83. Instead of a double strand molecule, RNA is a _____

84. DNA Single strand Instead of a double strand molecule, RNA is a _____

85. _____ RNA carries information from the nucleus to the ribosomes.

86. DNA Messenger _____ RNA carries information from the nucleus to the ribosomes.

87. _____ are linked in the ribosomes to make proteins.

88. DNA Amino acids _____ are linked in the ribosomes to make proteins.

89. _____ RNA brings the amino acids to the ribosomes.

90. DNA Transfer _____ RNA brings the amino acids to the ribosomes.

91. A human body cell has _____ pairs of chromosomes.

92. DNA 23 A human body cell has _____ pairs of chromosomes.

93. A pair of chromosomes in a body cell are called _____ chromosomes.

94. DNA homologous A pair of chromosomes in a body cell are called _____ chromosomes.

95. A human sex cell has _____ chromosomes.

96. DNA 23 A human sex cell has _____ chromosomes.

97. The point where two chromatids attach is called the _____.

98. DNA Centromere The point where two chromatids attach is called the _____.

99. Different forms of the same gene are called _____.

100. DNA Alleles Different forms of the same gene are called _____.

101. A chart of chromosomes arranged in homologous pairs is called a _____.

102. DNA Karyotype A chart of chromosomes arranged in homologous pairs is called a _____.

103. A person whose pair of sex chromosomes is XX is a _____.

104. DNA Female A person whose pair of sex chromosomes is XX is a _____.

105. TEST REVIEW END

106. H u m a n R a c e s ? W h a t i s t h e o r i g i n o f...

107. E a r l y H u m a n M i g r a t i o n R o u t e s xxxxx