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Who is credited with discovering the structure of the DNA molecule and what is the shape called? A Mrs. Smith & Mrs. Patterson, circle B Watson & Crick,

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Presentation on theme: "Who is credited with discovering the structure of the DNA molecule and what is the shape called? A Mrs. Smith & Mrs. Patterson, circle B Watson & Crick,"— Presentation transcript:

1 Who is credited with discovering the structure of the DNA molecule and what is the shape called? A Mrs. Smith & Mrs. Patterson, circle B Watson & Crick, pentagon C Watson & Crick, helix D Watson & Crick, double helix

2 Who is credited with discovering the structure of the DNA molecule and what is the shape called? D Watson & Crick, double helix

3 A DNA molecule is composed of two chains of A nitrogen bases B amino acids C proteins D nucleotides

4 A DNA molecule is composed of two chains of D nucleotides

5 What are the three components of a nucleotide? A sucrose and nitrogen base B sugar, phosphate, and nitrogen base C proteins and lipids D sugar, protein, and iron base

6 What are the three components of a nucleotide? B sugar, phosphate, and nitrogen base

7 Individuals differ in their appearance and physical makeup because of the A amount of RNA nucleotides B base sequence of DNA nucleotides C rate at which DNA duplicates D none of the above

8 Individuals differ in their appearance and physical makeup because of the B base sequence of DNA nucleotides

9 Chargaff’s rule states that in DNA, the amount of adenine equals the amount of A thymine B cytosine C guanine D all of the above

10 Chargaff’s rule states that in DNA, the amount of adenine equals the amount of A thymine

11 During DNA replication, which of the following segments would be complementary to the original DNA segment of CCTAAT? A CGATTA B GGUTTU C GGATTA D GGAUUA

12 During DNA replication, which of the following segments would be complementary to the original DNA segment of CCTAAT? C GGATTA

13 DNA can be “unzipped” by A acids B scissors C enzymes D spindle fibers

14 DNA can be “unzipped” by C enzymes

15 Which of the strands below is the complement to the segment GCATCCGA of a DNA molecule? A CCTAGGCT B GCATCCGA C CGUAGGCU D CGTAGGCT

16 Which of the strands below is the complement to the segment GCATCCGA of a DNA molecule? D CGTAGGCT

17 What type of RNA is responsible for bringing amino acids to the ribosome for protein synthesis? A messenger RNA B transfer RNA C ribosomal RNA D mitochondrial RNA

18 What type of RNA is responsible for bringing amino acids to the ribosome for protein synthesis? B transfer RNA

19 A DNA strand has the codon TCA. According to the chart, the corresponding messenger RNA codes for which of the following amino acids? A glycine B leucine C alanine D serine

20 A DNA strand has the codon TCA. According to the chart, the corresponding messenger RNA codes for which of the following amino acids? D serine

21 The messenger RNA will carry the DNA’s instructions out of the nucleus to which of the following? A vacuole B mitochondria C chloroplast D ribosome

22 The messenger RNA will carry the DNA’s instructions out of the nucleus to which of the following? D ribosome

23 To determine the molecular sequence of a gene for a protein, which molecule should be analyzed? A tRNA B ATP C DNA D rRNA

24 To determine the molecular sequence of a gene for a protein, which molecule should be analyzed? C DNA

25 The difference between DNA and RNA is that DNA contains A deoxyribose and uracil B deoxyribose and thymine C ribose and uracil D deoxyribose and adenine

26 The difference between DNA and RNA is that DNA contains B deoxyribose and thymine

27 If a portion of a DNA strand has the base sequence TACGCA, what will be the base sequence of the mRNA strand transcribed? A TACGCA B UACGCA C AUGCGU D ATGCGT

28 If a portion of a DNA strand has the base sequence TACGCA, what will be the base sequence of the mRNA strand transcribed? C AUGCGU

29 Transcription of the DNA sequence below: AAGCTGGGA would most directly result in which of the following? A a sequence of three amino acids, linked by peptide bonds B a DNA strand with the base sequence TTCGACCCT C a mRNA strand with the sequence TTCGACCCT D a mRNA strand with the sequence UUCGACCCU

30 Transcription of the DNA sequence below: AAGCTGGGA would most directly result in which of the following? D a mRNA strand with the sequence UUCGACCCU

31 What is the purpose of transfer RNA? A It unzips the double helix so transcription can begin. B It retrieves amino acids from the cytoplasm for protein construction. C It carries genetic information to the ribosomes. D It produces a complementary copy of a strand of DNA.

32 What is the purpose of transfer RNA? B It retrieves amino acids from the cytoplasm for protein construction.

33 A human skin cell contains 46 chromosomes. How many chromosomes are present in a human sperm cell? A 23 B 46 C 92 D 138

34 A human skin cell contains 46 chromosomes. How many chromosomes are present in a human sperm cell? A 23

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