A virus is isolated, and individual virions appear spherical. What type of virus is this? A. Bacteriophage B. Helical C. Icosahedral D. Lysogenic
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A virus is isolated, and individual virions appear spherical. What type of virus is this?
A. Bacteriophage
B. Helical
C. Icosahedral
D. Lysogenic
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- What is the basic classification of viruses. In other words, if you find a new virus, what is the first thing to determine? A. Is this a DNA or an RNA virus? B. Does it cause blue snotty nosed fever? C. does it have a vector? D. does it infect humans?A patient presents at the clinic with an acute viral infection. Assays that analyze the viral life cycle classify the virus into Group V with a segmented genome. Which virus is the most likely diagnosis for the patient? a. Rabies virus b. Picornavirus c. HIV-1 d. Influenza A virusWhich of these is not a general pattern of virus morphology?a. enveloped, helical b. naked, icosahedral c. enveloped, icosahedral d. complex, helical
- To infect their specific host cells, viruses go through these chronological steps EXCEPT a. Release of progeny viruses b. Absorption and penetration of the viral particles c. Uncoating of the nucleic acid of the viral particles d. Synthesis and assembly of viral particle componentsWhich receptors of the infl uenza virus are responsible for binding to the host cell? a. hemagglutinin c. type A b. neuraminidase d. capsid proteinsYou are treating a patient with antiviral agent against the nucleocapsid, what part of the virus will be destroyed? a. Enveloped b. Cytoplasm c. Capsid and genetic material d. Genetic material
- Give an example of each of the following types of viruses a. Double stranded DNA b. Single stranded DNA c. Positive sense RNA d. Negative sense RNA e. RetrovirusesIn general, RNA viruses multiply in the cell , and DNAviruses multiply in the cell .a. nucleus, cytoplasm b. cytoplasm, nucleus c. vesicles, ribosomes d. endoplasmic reticulum, nucleolusThe --------------- retrovirus contains a ______________ genome: Select one: a. chicken pox, circular DNA b. Sars CoVII, double-stranded RNA c. measles, double-stranded DNA d. HIV, Single-stranded RNA
- At which stage in viral replication does the genetic information enter the host cell? a. Penetration c. Assembly b. Synthesis d. ReleaseWhich of the following is common in animal viruses but NOT in bacteriophage? a. DNA b. Capsid c. Envelope d. Icosahedral shapeThe envelope of an animal virus is derived from the of its host cell. Select one: A. Cell wall B. Receptors C. Glycocalyx D. Membrane
