Chapter 11:
DNA and Genes
Practice Test
1.
A DNA mutation is __________.
a.
a mistake or change in the nucleolus
b.
a mistake or change in the ribosomes
c.
a mistake or change in the RNA sequence
d.
a mistake or change in the DNA sequence
Hint
2.
Which of the following defines translocation?
a.
the addition of a single base to DNA
b.
the deletion of a single base from DNA
c.
breaking a piece of a chromosome and adding it to another chromosome
d.
the failure of the homologous chromosome to separate properly
Hint
3.
Which of the following is NOT a nitrogen base found in RNA?
a.
thymine
b.
adenine
c.
uracil
d.
guanine
Hint
4.
The process whereby DNA unzips and makes a strand of mRNA is called __________.
a.
replication
b.
translation
c.
transcription
d.
complementation
Hint
5.
When the mRNA leaves the nucleus, it binds to __________.
a.
the nuclear membrane
b.
the endoplasmic reticulum
c.
a mitochondrion
d.
a ribosome
Hint
6.
Transfer RNA carries __________ to the mRNA.
a.
amino acids
b.
nucleic acids
c.
genes
d.
codons
Hint
7.
Replication is __________.
a.
the process of copying DNA
b.
a process of making a protein
c.
the process of making enzymes
d.
the process of surrounding food with the plasma membrane
Hint
8.
How many bases make up a condon?
a.
one
b.
two
c.
three
d.
four
Hint
9.
What type of RNA makes up a portion of the ribosome?
a.
mRNA
b.
tRNA
c.
rRNA
d.
DNA
Hint
10.
Which of the following base pairs would not be found in a cell?
a.
adenine-- thymine
b.
cytosine--guanine
c.
thymine--uracil
d.
adenine--uracil
Hint
11.
If a DNA sequence reads CCGTACT, what would the complementary DNA sequence be?
a.
CCGTACT
b.
GGCATGA
c.
GGCUTGU
d.
GGCAUGA
Hint
12.
What is the mRNA sequence for a strand of DNA reading CCGTACT?
a.
CCCGTACT
b.
GGCATGA
c.
GGCUTGU
d.
GGCAUGA
Hint
13.
What type of mutation occurs when a single base is added to or deleted from DNA?
a.
inversion
b.
translocation
c.
frame shift
d.
nondisjuction
Hint
14.
A (n)__________ chromosomal mutation occurs when a part of a chromosome breaks and is reinserted backwards.
a.
deletion
b.
insertion
c.
inversion
d.
translocation
Hint
15.
Any agent that can cause a change in DNA is called a _______.
a.
gene
b.
chromosome
c.
ribosome
d.
mutagen
Hint
