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Chapter Post-Test



 This activity contains 40 questions.

Question 1
1
Open Hint for Question 1 in a new window		 Which of the following statements correctly indicates the relationship among chromosomes, genes, and proteins?
 
End of Question 1


Question 2
2
Open Hint for Question 2 in a new window		 Consider the backbone of the DNA double helix. Which of the following statements about the structure of the double helix is FALSE?
 
End of Question 2


Question 3
3
Open Hint for Question 3 in a new window		 Genes provide the information needed to produce _____ in the cell.
 
End of Question 3


Question 4
4
Open Hint for Question 4 in a new window		 How do mutations affect an organism?
 
End of Question 4


Question 5
5
Open Hint for Question 5 in a new window		 Which of the following statements about the process of DNA replication is true?
 
End of Question 5


Question 6
6
Open Hint for Question 6 in a new window		 Which of the following statements describes a DNA molecule?
 
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Question 7
7
Open Hint for Question 7 in a new window		 A single chromatid is composed of _________.
 
End of Question 7


Question 8
8
Open Hint for Question 8 in a new window		 The DNA base sequence TTGCGATCG on the parent strand would code for which of the following sequences on the newly synthesized strand?
 
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Question 9
9
Open Hint for Question 9 in a new window		 According to one of the fundamental rules of base pairings, which of the following base pairings is correct?
 
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Question 10
10
Open Hint for Question 10 in a new window		 If you took a normal cell and replaced its thymine (T) with radioactive T and allowed that cell to divide once, which of the following results would you expect?
 
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Question 11
11
Open Hint for Question 11 in a new window		 A DNA sample has 20% C, 23% G, 27% T, and 30% A. This sample must have come from ________.
 
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Question 12
12
Open Hint for Question 12 in a new window		 Why is cancer so much more common in older people than in younger people?
 
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Question 13
13
Open Hint for Question 13 in a new window		 For a mutation to play any heritable role, it must _______.
 
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Question 14
14
Open Hint for Question 14 in a new window		 DNA replication occurs at an unbelievably fast rate. Once replication is complete, a _____ number of mistakes are likely to occur.
 
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Question 15
15
Open Hint for Question 15 in a new window		 Which of the following would indicate a base-pairing mutation in DNA?
 
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Question 16
16
Open Hint for Question 16 in a new window		 How many enzymes are typically produced from a single gene?
 
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Question 17
17
Open Hint for Question 17 in a new window		 A DNA template has the following base sequence: GGTCAATCG. What would be the sequence on the complementary strand?
 
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Question 18
18
Open Hint for Question 18 in a new window		 Which of the following statements about gene mutations is FALSE?
 
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Question 19
19
Open Hint for Question 19 in a new window		 In their Nobel Prize-winning experiments, Beadle and Tatum exposed fungal spores to X-rays to induce mutations. To test if the spores had actually been mutated, the scientists inoculated various media with the mutated spores. Which of the following media was used as a control in the experiment?
 
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Question 20
20
Open Hint for Question 20 in a new window		 Which of the following statements about DNA replication is FALSE?
 
End of Question 20


Question 21
21
Open Hint for Question 21 in a new window		 Which of the following sets is composed of DNA that is most similar?
 
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Question 22
22
Open Hint for Question 22 in a new window		 Which of the following statements is consistent with the hypothesis that DNA is the molecule of inheritance?
 
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Question 23
23
Open Hint for Question 23 in a new window		 If a point mutation occurred during DNA replication, you would immediately expect to see ________.
 
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Question 24
24
Open Hint for Question 24 in a new window		 Mutations that increase trinucleotide repeats in a gene would most likely _________.
 
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Question 25
25
Open Hint for Question 25 in a new window		 A single strand of DNA is a very stable molecule. However, the two strands of the double helix are not so stable and are easily separated from each other. The best explanation for this is that ___________.
 
End of Question 25


Question 26
26
Open Hint for Question 26 in a new window		 A certain organism's DNA is composed of 21% guanine. What percentage of thymine does it have?
 
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Question 27
27
Open Hint for Question 27 in a new window		 A DNA sequence reads ATCGCTATCGAC. If the fourth nucleotide is changed to a T, the fourth nucleotide on the complementary strand would be _________.
 
End of Question 27


Question 28
28
Open Hint for Question 28 in a new window		 The types of mutations that produce new alleles and drive evolution must occur in __________.
 
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Question 29
29
Open Hint for Question 29 in a new window		 If a certain type of Neurospora was mutated such that it could not synthesize a particular amino acid, on which of the following types of media would it grow?
 
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Question 30
30
Open Hint for Question 30 in a new window		 The nucleotides in one strand of DNA are attached to the nucleotides of another strand of DNA by _______.
 
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Question 31
31
Open Hint for Question 31 in a new window		 If the sequence CATGTA was used as a template in DNA replication, what would the sequence of bases be on the newly synthesized strand?
 
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Question 32
32
Open Hint for Question 32 in a new window		 A point mutation ___________.
 
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Question 33
33
Open Hint for Question 33 in a new window		 An organism's DNA contains 22% cytosine. How much thymine does it have?
 
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Question 34
34
Open Hint for Question 34 in a new window		 DNA replication errors can be corrected by _______.
 
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Question 35
35
Open Hint for Question 35 in a new window		 Which of the following is an appropriate base pairing?
 
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Question 36
36
Open Hint for Question 36 in a new window		 Which of the following best describes the products of DNA replication?
 
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Question 37
37
Open Hint for Question 37 in a new window		 The difference between two alleles is the result of _______.
 
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Question 38
38
Open Hint for Question 38 in a new window		 A gene is ___________.
 
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Question 39
39
Open Hint for Question 39 in a new window		 The parts of a nucleotide that do not change are the ____________.
 
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Question 40
40
Open Hint for Question 40 in a new window		 If ________ makes an error that is not repaired in its proofreading mechanism, a mutation will result.
 
End of Question 40


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