WorksheetsViruses Review
Total questions: 11
Worksheet time: 11mins
Cells differ from viruses in that only cells -
use genetic material.
are microscopic structures.
contain cytoplasm.
have protective covering.
Viruses have structures that allow them to inject their genetic material directly into the DNA of the host cell. This strategy benefits the virus in that
the host cell is turned into a virus.
mutations are introduced into the host cell.
it is able to transform into a host cell.
the virus uses the host’s machinery to replicate.
Viruses use two different cycles of replication, the lytic cycle and the lysogenic cycle. In what way is the lysogenic cycle different from the lytic cycle?
The virus recognizes and attaches to host cell.
The host cell is not destroyed immediately.
Viral DNA is replicated along with host DNA.
The virus injects its DNA into the host cell.
A bacteriophage is a type of virus that infects only a bacterial host cell. A bacteriophage can’t cause disease in humans because it
does not have the correct surface proteins.
can only use bacterial DNA to replicate.
gets destroyed in the human digestive tract.
is able to reproduce without a host cell.
The presence of which of the following structures could be used to distinguish a cell from a virus?
genetic material
protective covering
cytoplasm
protein coat
The viral structure responsible for recognizing specific host cells is –
a surface protein
genetic material
a retrovirus
a bacteriophage
A bacteriophage virus causes infection in bacteria by injecting which of the following?
DNA
Hormones
Proteins
Lipids
Which of the following characteristics is shared by viruses and living cells? Both viruses and living cells –
have a nucleus, as well as a cell wall.
contain nucleic acids such as DNA or RNA
can replicate independently of a host cell.
use organelles to perform life functions.
What does a host cell provide for a virus?
A source of thermal energy.
Protection from the environment.
Mechanisms for genetic replication.
Large molecules as a food source.
All of the following are steps in the process of viral replication EXCEPT –
the virus incorporates its genetic material into host DNA
the virus uses host cell to assemble more virus particles.
the host cell replicates viral genetic material with its own.
the host cell generates antibodies to a viral infestation.
Which of the following correctly describes what happens when a host cell undergoes lysis?
The cell bursts, releasing viruses.
New virus particles are synthesized.
Viral DNA is replicated by the host.
A prophase is inserted into host DNA.
