18. Viruses, Viroids, & Prions
Introduction to Viruses
- Multiple ChoiceWhich of the following lists the correct order of viral life cycle phases, starting with the first at the top?30views
- Multiple ChoiceWhich of the following statements is true about viruses?38views
- Multiple ChoiceWhich of the following is the correct progression of a herpes simplex 2 infection?27views
- Multiple ChoiceWhich of the following is a likely consequence of a viral disease that destroys the cells of the anterior gray horn of the spinal cord?38views
- Multiple ChoiceWhich of the following best describes the action of retroviruses such as HIV?36views
- Multiple ChoiceWhich of the following best describes a virus?27views
- Multiple ChoiceIn the viral replication cycle, during which stage does the formation of mature viruses (virions) occur?42views
- Multiple Choice
When packaged in the virus, the complex of nucleic acid and protein is known as the:
1510views30rank - Multiple Choice
Which component of a virus allows the virus to bind to and enter the host cell?
1366views10rank - Multiple Choice
The SARS-CoV-2 virus (Covid-19) is an enveloped, icosahedral virus. What characteristics does the SARS-CoV-2 virus have?
a) The SARS-CoV-2 virus is round in shape with an outer lipid bilayer.
b) The SARS-CoV-2 virus is a complex-shaped virus with an outer lipid bilayer.
c) The SARS-CoV-2 virus is helical in shape and is considered a 'naked' virus.
d) The SARS-CoV-2 virus is round in shape and is considered a 'naked' virus.1816views13rank - Textbook Question
This virus family, normally associated with AIDS, may be useful for gene therapy.
540views - Textbook Question
Why do we classify viruses as obligatory intracellular parasites?
939views - Textbook Question
List the four properties that define a virus. What is a virion?
1068views - Textbook Question
Recall from Chapter 1 that Koch's postulates are used to determine the etiology of a
disease. Why is it difficult to determine the etiology of
a. a viral infection, such as influenza?
b. cancer?
641views - Textbook Question
Which of the following statements is false?
a. Viruses contain DNA or RNA.
b. The nucleic acid of a virus is surrounded by a protein coat.
c. Viruses multiply inside living cells using viral mRNA, tRNA, and ribosomes.
d. Viruses cause the synthesis of specialized infectious elements.
e. Viruses multiply inside living cells.
679views