Download PRACTICE TEST CHAPTER 13 1 ______ 1. Which of the following

Name ____________________________
PRACTICE TEST CHAPTER 13
Period ____ Date __________ Seat ____
______
1.
Which of the following describes RNA?
a.
b.
c.
d.
_______ 2.
RNA is usually double-stranded and contains the base thymine.
RNA is usually single-stranded and contains the base uracil.
RNA is longer than DNA and uses five bases to encode information.
RNA is made in the nucleus of eukaryotic cells and stays there to carry out its functions.
The process by which the genetic code of DNA is copied into a strand of RNA is called
a. translation.
_______ 3.
b. transformation
c. transcription
d. replication
In messenger RNA, each codon calls for a particular
a.
nucleotide
b. enzyme
c. promoter
d. amino acid
_______ 4.
The process of making proteins on the ribosome based on instructions from messenger RNA is
called
a. transcription
b. transformation
c. translation
d. molecular biology
_______ 5.
Changes in DNA sequences that affect genetic information are known as
a.
_______ 6.
b. translations
c. transformations
toxin
b. mutagen
c. nucleotide
exons spliced together after introns are removed.
introns spliced together after exons are removed.
exons spliced together with introns.
long pieces of DNA shortened by the Dicer enzyme.
A mutation in which parts of a chromosome change direction is called a
a. inversion
_______ 10.
c. is transcribed into RNA
d. is made of mRNA
In eukaryotes, functional messenger RNA molecules are made from
a.
b.
c.
d.
_______ 9.
d. nitrogenous base
An expressed gene
a. functions as a promoter
b. codes for just one amino acid
_______ 8.
d. mutations
A substance that can cause a change in the DNA code of an organism is called a
a.
_______ 7.
replications
b. translocation
c. deletion
d. duplication
Because insertions and deletions within a gene result in a shift in the “reading frame” of the
Genetic code, they are referred to as __ mutations.
a.
chromosomal
b. frameshift
c. sequence
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d. codon
PRACTICE TEST CHAPTER 13
Use the codon chart below to answer questions 11—13.
_______ 11.
Which of the following codons signifies the start and end of translation?
a.
_______ 12.
CAA, UGA
c. AUG, UAG
d. UUU, GCA
Which of the chains of amino acids corresponds to the nucleotide sequence
UCAAGCGUA?
a. glu-cys-pro
_______ 13.
b. UAA, ACU
b. glu-asp-“stop”
c. thr-arg-met
d. ser-ser-val
An anticodon that is complementary to the amino acid tyr (tyrosine) is
a. TUT
b. TUG
c. AUG
d. ATA
b. inversion
c. translocation
d. deletion
b. inversion
c. translocation
d. deletion
Use the diagrams below to answer questions 14—15.
_______ 14.
Mutant 1 is a(n)
a. duplication
_______ 15.
Mutant 2 is a(n)
a. duplication
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PRACTICE TEST CHAPTER 13
16.
How does the enzyme that makes RNA “know” where to start transcribing the DNA?
17.
Suppose you start with the DNA strand ACCGTCAC. What would a messenger RNA strand
Transcribed from this DNA strand look like?
18.
What is a codon?
19.
How do anticodons work?
20.
A code on a DNA molecule for a specific amino acid is CTA. What would the messenger RNA codon
be? What would the transfer RNA anticodon be?
21.
Name and give examples of two major types of mutations.
22.
How does a deletion mutation differ from a substitution mutation?
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PRACTICE TEST CHAPTER 13
23.
Can mutations have a positive effect? Explain your answer.
Use the data table to answer questions 24—25.
24.
The table shows mRNA codons for three amino acids. Suppose a substitution mutation occurred
At the third nucleotide position of the codons for alanine. What would happen to the resulting
protein?
25.
The three amino acids shown in the table have very similar—but not identical—properties. What
substitution mutations could cause one of these amino acids to be switched for another? What might
be the result?
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