WorksheetsChapter 13 Test - DNA
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
The result of the Hershey-Chase experiment was that radioactivity could be detected inside the bacterial cells when they were infected by bacteriophages marked with phosphorus-32.
a)
Bacteriophages inject DNA into the bacterial cells.
b)
Bacteriophages inject protein into the bacterial cells.
c)
Bacteriophages inject carbohydrates into the bacterial cells.
d)
Bacteriophage absorb DNA from bacterial cells.
2.
Chargaff's rules of base pairing are explained by which structural feature of DNA?
a)
Each strand of DNA contains a phosphate and sugar backbone.
b)
The nucleotides of DNA may appear in a wide variety of sequences.
c)
DNA is double stranded, and covalent bonds between identical nucleotides hold the strands together.
d)
DNA is double stranded, and hydrogen bonds between base pairs hold the strands together.
3.
When must DNA replication occur during the cell cycle for each daughter cell to receive a complete copy of DNA?
a)
DNA replication must occur before mitosis.
b)
DNA replication must occur during mitosis
c)
DNA replication must occur during G2.
d)
DNA replication must occur during G1.
4.
How does DNA replication differ between eukaryotes and prokaryotes?
a)
The base-pairing rules are different between eukaryotes and prokaryotes.
b)
Only prokaryotes rely on enzymes such as DNA polymerase.
c)
Only eukaryotes rely on enzymes such as DNA polymerase.
d)
Eukaryotes use multiple replication forks to replicate a larger volume of DNA.
5.
Hershey and Chase chose to use bacteriophages in their experiments because these viruses
a)
contain little more than DNA and protein.
b)
can be seen with a light microscope.
c)
can infect only bacteria, not humans.
d)
will not grow in radioactive culture.
6.
The four types of nucleotides that make up DNA are named for their
a)
hydrogen bonds.
b)
nitrogen-containing bases.
c)
phosphate groups.
d)
ring-shaped sugars.
7.
What holds base pairs together?
a)
hydrogen bonds
b)
sugar-phosphate backbones
c)
pairs of double-ringed nucleotides
d)
nitrogen-carbon bonds
8.
In humans, where does DNA replication take place?
a)
cytoplasm
b)
ribosome
c)
nucleus
d)
vacuole
9.
During replication, the function of the enzyme DNA polymerase is to
a)
bind nucleotides together.
b)
send messages.
c)
receive messages.
d)
locate replication sites.
10.
What is the shape of DNA?
a)
Twisted Ladder
b)
Double Helix
c)
Helix
d)
Ladder
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