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WorksheetsDNA Structure and Replication
Total questions: 35
Worksheet time: 1hrs 2mins
Name
Class
Date
1.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
2.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
3.
Which 2 molecules form the sides (backbone) of the DNA ladder?
a)
deoxyribose sugar and adenine
b)
deoxyribose sugar and a hydrogen bond
c)
deoxyribose sugar and the nucleus
d)
deoxyribose sugar and phosphate
4.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
5.
The enzyme that unzips the DNA to prepare for replication
a)
helicase
b)
replicase
c)
polymerase
d)
synthase
6.
A process in which DNA has the unique ability to make an exact copy of itself.
a)
Replication
b)
Translation
c)
Transcription
7.
What are the nucleotides made of?
a)
Sugar, Phosphate, nitrogen base
b)
Phosphate, Adenine, nitrogen base
c)
Thymine, Adenine, Cytomine
d)
Phosphate, Nitrogen, Adenine
8.
Which of the following units are repeatedly joined together to form a strand of DNA?
a)
amino acids
b)
nucleotides
c)
fatty acids
d)
polysaccharides
9.
If a strand reads:
3' A A A T T T C 5'
The matching strand would read...
3' A A A T T T C 5'
The matching strand would read...
a)
5' T T T A A A G 3'
b)
3' T T T A A A G 5'
c)
5' A A A T T T C 3'
d)
3' U U U A A A G 5'
10.
This picture is illustrating the ____ nature of DNA.
a)
anti-parallel
b)
deoxyribosic
c)
helical
d)
radioactive
11.
Polymerase is able to replicate the new DNA ______ along the leading strand.
a)
continuously
b)
only in short fragments
c)
very slowly
d)
prokaryotically
12.
What is the shape of DNA?
a)
Double helix
b)
Triple helix
c)
Flat, bilayer
d)
Three-pronged rigid ladder
13.
If the percentage of DNA is made of 30% Thymine, what is the correct percentage of Guanine?
a)
30
b)
15
c)
20
d)
60
14.
In Chargaff's Rule, adenine pairs with ________, and cytosine pairs with _________.
a)
thymine, guanine
b)
guanine, thymine
c)
uracil, guanine
d)
thymine, uracil
15.
Which enzyme is responsible for adding nucleotides?
a)
Topoisomerase
b)
DNA Polymerase
c)
Ligase
d)
Primase
16.
Which enzyme is responsible for adding the RNA primer to the template strand?
a)
Helicase
b)
DNA Polymerase
c)
Ligase
d)
Primase
17.
X-Ray diffraction pictures of DNA that suggested a helical shape were taken by:
a)
Watson & Crick
b)
Meselson & Stahl
c)
Beadle & Tatum
d)
Gosling & Franklin
18.
The "Double Helix Model" of DNA was proposed by:
a)
Watson & Crick
b)
Meselson & Stahl
c)
Beadle & Tatum
d)
Gosling & Watkins
19.
Who's work concluded that the %A=%T and %G=%C
a)
Chargaff
b)
Meischer
c)
Levene
d)
Hammerling
20.
Small segments of DNA made on the lagging strand are called:
a)
Okazaki Fragments
b)
ERVs
c)
Transposable Elements
d)
Telomeres
21.
DNA replication was proved by the experiments of:
a)
Hershey & Chase
b)
Meselson & Stahl
c)
Watson & Crick
d)
Franklin & Gosling
22.
What is the complement to the DNA strand below:
5'-ATGCCAT-3'
5'-ATGCCAT-3'
a)
5'-TACGGTA-3'
b)
3'-TACGGTA-5'
c)
3'-ATGGCAT-5'
d)
5'-ATGGCAT-3'
23.
The enzyme that joins together small segments of newly replicated DNA is:
a)
DNA Polymerase III
b)
DNA Polymerase I
c)
DNA Polymerase II
d)
DNA Ligase
24.
What is DNA made of?
a)
Sugar, Phosphate, nitrogen base
b)
Phosphate, Adenine, nitrogen base
c)
Thymine, Adenine, Cytomine
d)
Phosphate, Nitrogen, Adenine
25.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
26.
What determines the code, or information, of a DNA molecule?
a)
the shape (structure) of the nitrogen bases
b)
the order (sequence) of the nitrogen bases
c)
the color of the nitrogen bases
d)
the frequency (number) of nitrogen bases
27.
DNA replication results in two DNA molecules,
a)
each one with two original strands
b)
each one with two new strands
c)
each one with one new strand and one original strand
d)
one with two new strands and the other with two original strands
28.
order of replication
a)
3, 2, 1, 4
b)
2, 1, 4, 3
c)
2, 3, 1, 4
d)
3, 4, 1, 2
29.
What is the correct complimentary strand for the following DNA?ATCGAG
a)
TACGAG
b)
ATCGAG
c)
TAGCTG
d)
TAGCTC
30.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
ribosome
d)
nucleus
31.
Nucleotides are made up of a sugar, phosphate, and..?
a)
nitrogenous base
b)
nucleic acid
c)
cholesterol
d)
fatty acid
32.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Denitrogenous acid
c)
Deribonucleic acid
d)
Diribonucleic acid
33.
If a sample of DNA contains 15% guanine, how much adenine would it have?
a)
35%
b)
15%
c)
70%
d)
30%
34.
If a sample of DNA contains 20% cytosine, how much guanine would it have?
a)
20%
b)
40%
c)
30%
d)
60%
35.
If a sample of DNA contains 32% thymine, how much guanine would that same sample contain?
a)
18%
b)
36%
c)
64%
d)
32%
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