Download Name: Date: Quiz name: Unit 4 Quiz (Replication/ transcription and tr

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Date: _______________
Quiz name: Unit 4 Quiz (Replication/ transcription and translation) (from version 1)
1.
DNA is a polymer of
A
fatty acids
B
nucleotides
C
nucleosides
D
nucleic acids
2.
The two polynucleotide chains in DNA are
A
semidiscontinuous
B
semiconservative
C
parrallel
D
antiparrallel
E
discontinuous
In the Hershey Chase Experiment, DNA was labeled with ____, and bacteriophage protein was labeled
with _____
3.
A
anticodons, codons
B
radioactive phosphorous, radioactive sulfur
C
codons, anticodons
D
radioactive sulfur, radioactive phosphorous
E
DNA polymerase, RNA polymerase
If a DNA molecule is found to be composed of 40% thymine, what percentage of guanine would be
expected
4.
A
10%
B
20%
C
40%
D
80%
5.
The enzymes that break hydrogen bonds and unwind DNA are
A
topoisomerases
B
helicases
C
polymerases
D
ligases
E
primases
6.
During replication, what enzyme adds complimentary bases?
A
topoisomerase
B
helicase
C
DNA polymerase
D
RNA polymerase
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E
7.
primase
how many different aminoacids are there?
A
3
B
4
C
20
D
64
E
an infinite number
8.
A stretch of chromosome that codes for a trait can be called a(n):
A
chromatid
B
replication fork
C
gene
D
base-pair
9.
The enzyme that adds nucleotides to the growing RNA strand during transcription is:
A
helicase
B
RNA polymerase
C
DNA polymerase
D
topoisomerase
E
primase
10.
In RNA, _____ codon(s) translate to ______ amino acid(s)
A
1, 1
B
3, 1
C
3, 3
D
1, 3
11.
Translation begins:
A
at the promoter
B
at the start codon
C
in the nucleus
D
on the lagging strand
E
at the primer
12.
A promoter is a:
A
binding site for DNA Polymerase
B
binding site for RNA Polymerase
C
sequence of RNA nucleotides
D
stop signal for transcription
E
start signal for translation
13.
A codon is a nucleotide triplet in the
A
rRNA
B
tRNA
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C
mRNA
D
DNA template strand
E
DNA non-template strand
14.
The DNA strand replicated in short fragments is called the:
A
lagging strand
B
leading strand
C
either leading or lagging strand
During DNA replication, a DNA strand that has the bases 5’-CTAGGT-3’ produces a strand with the
bases
15.
A
3’-TCGAAC-5’
B
5’-GATCCA-3’
C
3-GATCCA-5’
D
3’-GAUCCA-5’
16.
What is produced during transcription?
A
RNA molecules
B
DNA molecules
C
proteins
17.
Which DNA strand(s) will serve as a template during replication?
A
3' --> 5'
B
5' --> 3'
C
both
D
neither
E
either one
18.
Which molecule will bring the aminoacid to the translation site?
A
rRNA
B
mRNA
C
DNA
D
tRNA
19.
Which molecule dictates ultimately the order of the aminoacids in a protein?
A
tRNA
B
mRNA
C
DNA
D
rRNA
20.
Sickle Cell anemia is an example of:
A
nonsense mutation
B
missense mutation
C
silent mutation
D
frameshift mutation
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E
21.
chromosomal mutation
An example of excesive number of trinucleotide repeats is:
A
Sickle Cell Anemia
B
Cystic Fibrosis
C
Down syndrome
D
Fragile X syndrome
Answers 1-b
2-d
3-b
4-a
5-b
6-c
7-c
8-c
9-b
10-a
11-b
12-b
13-c
14-a
15-c
16-a
17-c
18-d
19-c
20-b
21-d
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