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DNA Replication

Total questions: 19

Worksheet time: 53mins

Name
Class
Date
1.

The picture below shows the steps of DNA replication beginning with step one and ending with step three.


​Because you are reusing the old, or parent, DNA strand DNA replication is said to be

a)

Semi- Conservative

b)

Semi-discontinuous

c)

Continuous

d)

Fully-Conserveative

2.

The picture below shows an enzyme unwinding and unzipping DNA.

​What is the name of this enzyme?

a)

DNA Helicase

b)

DNA Ligase

c)

DNA polyermase

d)

RNA Polymerase

3.

Which enzyme is responsible for adding the free nucleotides to the replicating DNA? ​

a)

DNA Helicase

b)

DNA Ligase

c)

DNA polyermase

d)

RNA Polymerase

4.

Which letter in the picture below depicts the leading strand in DNA replication?

a)

A

b)

C

c)

B

d)

None of the above

5.

Which letter in the picture below depicts the lagging strand in DNA replication?

a)

A

b)

C

c)

B

d)

None of the above

6.

Which letter in the picture below depicts the replication fork in DNA replication?

a)

A

b)

C

c)

B

d)

None of the above

7.

If a person suffered from a disorder where their DNA fragments were unable to fill in the missing slots in between the fragments of the lagging strand, they would most likely have a disorder that affected which enzyme?

a)

DNA Helicase

b)

DNA Ligase

c)

DNA polyermase

d)

RNA Polymerase

8.

DNA replication runs from ______' to _____' and is said to be ______________________

a)

5, 3, antiparallel

b)

3, 5, antiparallel

c)

5, 3, parallel

d)

3, 5, parallel

9.

Okazaki fragments appear on which strand of DNA during DNA replication?

a)

lagging

b)

leading

10.
If a strand reads:
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'
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.
A DNA nucleotide contains all of the following, except...
a)
Deoxyribose
b)
Phosphate group
c)
Nitrogenous base
d)
Cholesterol
13.
What is the shape of DNA?
a)
Double helix
b)
Triple helix
c)
Flat, bilayer
d)
Three-pronged rigid ladder
14.
What is the purpose of DNA replication?
a)
Cut the DNA 
b)
Make more cells
c)
Apoptosis
d)
Duplicate the DNA
15.
What is the backbone of DNA made of?
a)
Nitrogen bases
b)
Amino acids
c)
Double H
d)
Sugar & Phosphate
16.

This enzyme helps helicase unzip DNA by relieving supercoiling

a)

Topoisomerase

b)

Exonuclease

c)

DNA Primase

d)

DNA Polymerase

17.

This enzyme synthesizes short RNA sequences to guide DNA Polymerase

a)

Primers

b)

DNA Primase

c)

DNA Polymerase

d)

Topoisomerase

18.
In what phase of the cell cycle does DNA replication take place?
a)
G1
b)
S
c)
G2
d)
M
19.
Based on the diagram, the enzyme (represented in gray) is most likely...
a)
DNA polymerase
b)
DNA Ligase
c)
Nuclease
d)
Helicase