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DNA Replication

Total questions: 25

Worksheet time: 34mins

Name
Class
Date
1.
The two strands of DNA run in opposite directions. This is called
a)
Double helix
b)
Anti parallel
c)
Anti perpendicular
d)
double stranded
2.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
3.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
4.
Which of the following units are repeatedly joined together to form a strand of DNA? (This is the MONOMER of DNA.) 
a)
amino acids
b)
nucleotides
c)
fatty acids
d)
polysaccharides
5.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
6.

In what phase of the cell cycle does DNA replication take place?

a)

G1

b)

S

c)

G2

d)

Prophase

7.

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

8.

DNA Replication occurs during which phase of the cell cycle?

a)

G 1 phase

b)

S phase

c)

G 2 phase

d)

Mitotic phase

9.

DNA is built in this direction

a)

5' to 3' (new nucleotides added to the 3' end)

b)

3' to 5' (new nucleotides added to the 5' end)

c)

3' to 5' (new nucleotides added to the 3' end)

d)

5' to 3' (new nucleotides added to the 5' end)

10.

Okazaki fragments are found on the _______________ strand

a)

Leading

b)

Lagging

11.

Which enzyme is responsible for checking DNA for errors, and fixing it?

a)

DNA Polymerase

b)

Primase

c)

Helicase

d)

RNA Polymerase

12.
Which enzyme is responsible for adding nucleotides?
a)

Helicase

b)

DNA Polymerase

c)

Ligase

d)

Primase

13.

DNA polymerase is able to build the new DNA ______ along the leading strand.

a)

continuously

b)

only in short fragments

c)

very slowly

d)

prokaryotically

14.

Which enzyme fixes the Okazaki fragments?

a)

Helicase

b)

Polymerase

c)

Ligase

d)

Primerase

15.
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
16.
The enzyme that unzips the DNA to prepare for replication
a)
helicase
b)
replicase
c)
polymerase
d)
synthase
17.
Small segments of DNA made on the lagging strand are called:
a)
Okazaki Fragments
b)
ERVs
c)
Transposable Elements
d)
Telomeres
18.
What is A?
a)
Leading strand
b)
Lagging strand
c)
Okazaki Fragments
d)
DNA plymerase
19.
Which enzyme seals okazaki fragments together on the lagging strand?
a)
Topoisomerase
b)
Helicase
c)
Polymerase
d)
Ligase
20.
The process of DNA replication is called semi conservative because it results in
a)
none of these
b)
Two DNA molecules.  One original molecule and one with two new strands
c)
two exact copies with new strands
d)
two identical molecules, each with 1 original strand and one new.
21.
Which enzyme is responsible for adding nucleotides?
a)
Topoisomerase
b)
DNA Polymerase
c)
Ligase
d)
Primase
22.
In what phase of the cell cycle does DNA replication take place?
a)
G1
b)
S
c)
G2
d)
M
23.
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
24.
A scientist observes a base sequence of AGCTAGCTAGCT.  Which of the following would be the complimentary strand?
a)
TGCATGCATGCA
b)
TCGATCGATCGA
c)
TAGCTAGCTAGC
d)
TTAAGGCCTTCC
25.
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