Lecture Quiz 3 (Ch. 6: Viruses) Flashcards
The component(s) of a virus that is/are extended from the envelope for attachment is/are the:
A. nucleic acid
B. spikes
C. capsomeres
D. viral whiskers
B. spikes
Which of the following is true of prions?
A. they can be reliably inactivated by an autoclave
B. they contain a capsid
C. they can be inactivated by boiling at 100 degrees Celsius
D. they are a rogue form of protein, PrP
D. they are a rogue form of protein, PrP
The envelope of a virus is derived from the hosts ___.
A. cytoplasm
B. nucleic acids
C. genome
D. membrane structures
D. membrane structures
What is another name for a nonenveloped virus?
A. enveloped virus
B. latent virus
C. provirus
D. naked virus
D. naked virus
which of the following is not a typical capsid shape?
A. helical
B. icosahedron
C. tetrahedral
D. complex
C. tetrahedral
A virus obtains its envelope during which of the following phases
A. assembly
B. penetration
C. attachment
D. release
D. release
Which of the following components is brought into a cell by HIV?
A. reverse transcriptase
B. a DNA-dependent DNA polymerase
C. RNA polymerase
D ribosome
A. reverse transcriptase
viruses exhibit all of the following except ___.
A. ultramicroscopic size
B. ability to infect host cells
C. metabolism
D. definite shape
E. genes
C. metabolism
Which of the following cannot be used to culture viruses?
A. animal host
B. agar
C. tissue culture
D. embryo
B. agar
Which of these infectious agents do not have nucleic acid?
A. prions
B. bacteria
C. viroids
D. viruses
A. prions
A virus that infects a bacterium is called a/an (complete name)
bacterophage
The ____ on the bacteriophage allow for binding to the bacterial cell (two words)
tails fibers
An enzyme from HIV that can make a copy of DNA from RNA is called
reverse transcriptase
Viruses can be diagnosed and observed using what kind of microscope?
electron
cell abnormalities that can be visualized by a light microscope that result from a viral infection are called (two words)
cytopathic effects
