Write: Unit 5 Review at the top.

Transcription

1 Warm-up Take out a sheet of paper: Write: Unit 5 Review at the top. As each question goes on the board, write that question down and answer it. When answers come up, either write correct next to what you wrote, or write the correct answer down.

2 DNA REVIEW GAME

3 Which molecule of heredity contains deoxyribose? A) RNA B) mrna C) ribosomes D) DNA

4 D - DNA

5 What are the three parts of a nucleotide? A) Phosphate group, oxygen base, and 5-carbon sugar B) Oxygen group, nitrogenous base, and 5-carbon sugar ) Phosphate group, nitrogenous base, and 5-carbon sugar D) Phosphate group, nitrogenous base, and 5-carbon lipid

6 C Phosphate, nitrogen base, sugar

7 The four nucleotides that make up DNA are A) adenine, guanine, cytosine, and thymine B) adenine, lactose, cytosine, and thymine C) adenine, uracil, cytosine, and thymine D) adenine, uracil, guanine, and cytosine

8 A) adenine, guanine, cytosine, and thymine

9 According to Chargaff s rules, the amount of adenine in DNA equals the amount of A) thymine B) cytosine C) guanine D) cytosine and guanine

10 A) thymine

11 Cytosine always bonds with A) adenine B) guanine C) thymine D) uracil

12 B) guanine

13 What did Rosalind Franklin s X-ray patterns suggest to Watson and Crick? A) DNA contains 2 strands, each twisted around each other B) RNA is an exact duplicate of the DNA strands C) Adenine and thymine always bond together D) Adenine and cytosine always bond together

14 A) DNA contains 2 strands, each twisted around each other

15 Which scientist(s) discovered the shape of the DNA molecule? A) Chargaff B) Griffith C) Watson and Crick D) Hershey and Chase

16 C) Watson and Crick

17 The structure of a DNA molecule resembles a C) circle A) straight line D) triple helix B) double helix

18 B) double helix

19 A) Sugar molecules B) Phosphate groups C) Nitrogenous bases D) None of the above In the Watson-Crick model of DNA, the two strands of double helix are united by Hydrogen Bonds between

20 C) Nitrogenous bases

21 mrna is made through the process of A) replication C) translation B) duplication D) transcription

22 D) transcription

23 In RNA, what nucleotide replaces thymine? A) cytosine B) uracil C) guanine D) adenine

24 B) uracil

25 Which of the following is true? A) A mrna molecule has the form of a double helix B) The uracil nucleotide consists of the uracil nitrogen base, a deoxyribose sugar, and a phosphate group C) When trna attaches to mrna during translation, cytosine nucleotides pair with guanine nucleotides and adenine nucleotides pair with thymine nucleotides D) mrna is single stranded

26 D) mrna is single stranded

27 Codons are A) Sequences of proteins B) A site on a trna C) Three nucleotide sequences of mrna D) Sequences of polypeptides

28 C) Three nucleotide sequences of mrna

29 The process in which the mrna emerges from the nucleus and moves to the cytoplasm where it is converted into a protein chain is known as A) transcription B) transformation C) translation D) replication

30 C) translation

31 What is the initial codon in most molecules of mrna? A) AUG B) UGT C) GUA D) ATG

32 A) AUG

33 Which of the following is not true of a codon? A) It consists of three nucleotides B) It may code for the same amino acid as another codon C) It never codes for more than one amino acid D) It extends from one end of a trna molecule

34 D) It extends from one end of a trna molecule

35 In translation, amino acids bond to molecules of A) DNA B) mrna C) trna D) rrna

36 C) trna

37 Where in the cell are proteins assembled? A) ribosomes B) mitochondria C) nucleus D) cell membrane

38 A) ribosomes

39 Which component is not directly involved in the process known as translation? A) mrna B) DNA C) ribosomes D) trna

40 B) DNA

41 A) insertion B) deletion C) point D) inversion When one base in a strand of DNA is replaced by another, what kind of mutation has occurred?

42 C) point

43 An example of a mutagen is A) Cigarette smoke B) X-rays C) ultraviolet light D) All of these

44 D) All of these

45 The process of copies the DNA of a cell. A) transcription B) Translation C) replication D) transformation

46 C) replication

47 Which of the following is a 3- nucleotide sequence on a trna molecule that corresponds to a specific codon on an mrna molecule A) mutation B) anticodon C) protein D) Amino acid

48 B) anticodon

49 This describes one of twenty monomers that combine to make proteins.. A) mutation B) anticodon C) protein D) Amino acid

50 D) Amino acid

51 This describes a change in the genetic material. A) mutation B) anticodon C) protein D) Amino acid

52 A) mutation

53 Which of the following describes a molecule composed of one or more chains of amino acids? A) mutation B) anticodon C) protein D) Amino acid

54 C) protein

55 What kind of molecule is shown in the illustration below? There are no choices, since you should know this by the shape of the picture.

56 trna

57 If an original strand of DNA is A - C - G - T, what is the replicated copy (daughter strand)? A) T G- C - A B) U - G C- A C) T - G C- U D) U G C- T

58 A) T G- C - A

59 What is the amino acid coded for by the codon AGU?

60 Sernine

61 The paper in your hand Study it for the test! Complete your Review Packet and turn in the day of the test!