BIO 203
Chapter 13
Study guide
After completing the lecture notes in class and reviewing the notes and related book material, you should
be able to Describe/answer/know the following important concepts from this chapter.
Define acellular:
Acellular infectious particles include:
What are some general characteristics that all viruses, viroids and prions share?
How big are viruses?
Are viruses bigger or smaller than bacteria?
Provide some examples of viral diseases:
List some shared characteristics that all viruses have:
The protein coat of a virion is called a ______________.
If a virion has a phospholipid layer around the protein coat it is considered a _________________ virus.
The phospholipid layer provides ___________________and _____________________ sites for host cells.
Describe the intracellular state of a virus:
How are viruses differentiated from one another?
What type of nucleic acid may serve as a viral genome?
All cells have what type of nucleic acid for their genomes?
What accounts for the specificity of viral infections?
What is a generalist virus?
What types of cells can be infected by a virus?
A virus that infects a bacterium is called a _________________________________.
What role does a capsid provide for a virus?
What are capsids composed of?
Describe the three basic shapes of viruses:
Describe the shape of a bacteriophage:
How is a viral envelope acquired?
What role do an envelopes proteins and glycoproteins play?
What must a virus depend on for replication?
Define lytic replication:
List the basic stages of lytic replication:
Define lysogeny:
Define Prophage:
Define induction:
What events can cause induction?
Compare and contrast lytic and lysogenic replication:
Describe how Animal viruses attach to host cells:
How are animal viruses and bacteriophages different?
Where is a DNA virus replicated in an animal cell?
Where is a RNA virus replicated in an animal cell?
What type of infections can enveloped viruses cause?
Define latent virus:
Define provirus:
How is a latent virus different than a lysogenic virus?
Explain the role of viruses in cancer:
Why must viruses be cultured along with other cells for research purposes?
Describe the living characteristics of viruses:
Describe the nonliving characteristics of viruses:
Describe viroids:
List the disinfection and sterilization methods that prions are resistant to:
How are prions destroyed?