Biology: The Dynamics of Life, California Edition

Chapter 11: DNA and Genes

DNA and Genes: DNA

1.
The process where enzymes make an RNA copy of a portion of a DNA strand is called __________.
A)acid creation
B)transcription
C)helix creation
D)replication
2.
__________ is a change in a single base pair in DNA.
A)point mutation
B)frameshift mutation
C)gamma mutation
D)chromosomal mutation
3.
Which of these is usually NOT considered a mutagen?
A)nuclear radiation
B)low temperatures
C)ultraviolet light
D)formaldehyde
4.
What is an intron?
A)a long, noncoding nucleotide sequence in genes
B)an amino acid
C)a codon
D)part of the translation process
5.
Which of these correctly matches with the nitrogenous base adenine in DNA?
A)thymine
B)adenine
C)cytosine
D)guanine
6.
Which of these sequences correctly describes how DNA is copied?
A)replication—bonding of bases—separation of strands—base pairing
B)separation of strands—bonding of bases—replication—base pairing
C)separation of strands —base pairing—bonding of bases—replication
D)replication—bonding of bases—base pairing—separation of strands
7.
<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181857/ch11_0_a.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (10.0K)</a>
According to the data in the table, which of these statements is true?
A)C and G together compose at least 50% of each of the DNA samples.
B)The total amounts of A, T, G, and C in each DNA sample add to about 100%.
C)C is represented in the smallest percentage for each of the DNA samples.
D)There is always more T than A in each of the DNA samples.
8.
Which of the following is one difference between RNA and DNA?
A)RNA contains uracil, while DNA contains thymine.
B)RNA's sugar is deoxyribose, while DNA's sugar is ribose.
C)RNA is double stranded, and DNA is single stranded.
D)RNA and DNA are the same thing.
9.
Thymine and cytosine are also called __________.
A)isotopes
B)pyrimidines
C)viruses
D)purines
10.
Which of these statements is NOT true?
A)While chromosomal mutations occur in all living organisms, scientists see them most commonly in plants rather than animals.
B)Asbestos is not considered a chemical mutagen responsible for chromosomal mutations.
C)The reason that chromosomal mutations usually do not get passed along to future generation is that an affected zygote usually dies.
D)An organism that has been affected by a chromosomal mutation and lives to maturity is often sterile.
11.
What does a dosimeter do?
A)monitor RNA processing
B)monitor exposure to radiation
C)monitor deletion chromosomal mutations
D)monitor DNA repairing
12.
Which nitrogenous base does uracil pair with in RNA?
A)thymine
B)guanine
C)cytosine
D)adenine
13.
Which of these DNA strands would the DNA strand A-T-G-C-C-G-T-T match to?
A)G-C-A-T-T-A-C-C
B)T-T-G-C-C-G-T-A
C)C-G-T-A-A-T-G-G
D)T-A-C-G-G-C-A-A
14.
AUG is __________, while UAA is __________.
A)a stop codon—a start codon
B)a ribosome—a protein
C)transfer RNA—messenger RNA
D)a start codon—a stop codon
15.
Which of these chromosomal mutation diagrams shows inversion mutation?
A)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181857/ch11_0_b.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (2.0K)</a>
B)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181857/ch11_0_c.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (2.0K)</a>
C)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181857/ch11_0_d.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (3.0K)</a>
D)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181857/ch11_0_e.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (2.0K)</a>
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