Chapter 11:
DNA and Genes: DNA
1.
Which of the following is one difference between RNA and DNA?
a.
RNA contains uracil, while DNA contains thymine.
b.
RNA is double stranded, and DNA is single stranded.
c.
RNA's sugar is deoxyribose, while DNA's sugar is ribose.
d.
RNA and DNA are the same thing.
Hint
2.
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
Hint
3.
Which nitrogenous base does uracil pair with in RNA?
a.
adenine
b.
cytosine
c.
guanine
d.
thymine
Hint
4.
Which of these correctly matches with the nitrogenous base adenine in DNA?
a.
cytosine
b.
guanine
c.
thymine
d.
adenine
Hint
5.
Which of these is usually NOT considered a mutagen?
a.
low temperatures
b.
formaldehyde
c.
ultraviolet light
d.
nuclear radiation
Hint
6.
Thymine and cytosine are also called __________.
a.
viruses
b.
purines
c.
isotopes
d.
pyrimidines
Hint
7.
Which of these DNA strands would the DNA strand A-T-G-C-C-G-T-T match to?
a.
T-A-C-G-G-C-A-A
b.
T-T-G-C-C-G-T-A
c.
C-G-T-A-A-T-G-G
d.
G-C-A-T-T-A-C-C
Hint
8.
Which of these statements is NOT true?
a.
An organism that has been affected by a chromosomal mutation and lives to maturity is often sterile.
b.
Asbestos is not considered a chemical mutagen responsible for chromosomal mutations.
c.
While chromosomal mutations occur in all living organisms, scientists see them most commonly in plants rather than animals.
d.
The reason that chromosomal mutations usually do not get passed along to future generation is that an affected zygote usually dies.
Hint
9.
What does a dosimeter do?
a.
monitor deletion chromosomal mutations
b.
monitor exposure to radiation
c.
monitor DNA repairing
d.
monitor RNA processing
Hint
10.
What is an intron?
a.
a codon
b.
a long, noncoding nucleotide sequence in genes
c.
an amino acid
d.
part of the translation process
Hint
11.
According to the data in the table, which of these statements is true?
a.
C is represented in the smallest percentage for each of the DNA samples.
b.
The total amounts of A, T, G, and C in each DNA sample add to about 100%.
c.
There is always more T than A in each of the DNA samples.
d.
C and G together compose at least 50% of each of the DNA samples.
Hint
12.
Which of these sequences correctly describes how DNA is copied?
a.
replication—bonding of bases—separation of strands—base pairing
b.
replication—bonding of bases—base pairing—separation of strands
c.
separation of strands —base pairing—bonding of bases—replication
d.
separation of strands—bonding of bases—replication—base pairing
Hint
13.
Which of these chromosomal mutation diagrams shows inversion mutation?
a.
b.
c.
d.
Hint
14.
AUG is __________, while UAA is __________.
a.
transfer RNA—messenger RNA
b.
a stop codon—a start codon
c.
a start codon—a stop codon
d.
a ribosome—a protein
Hint
15.
__________ is a change in a single base pair in DNA.
a.
chromosomal mutation
b.
point mutation
c.
gamma mutation
d.
frameshift mutation
Hint
