Chapter 13 Flashcards
(22 cards)
Virus maturation always happens in the cytoplasm.
False
List the 6 general virus multiplication steps.
- Attachment
- Entry
- Uncoating
- Biosynthesis
- Maturation
- Release
A virion is a complete viral particle composed of ________ surrounded by a(n) ________.
Nucleic acid, capsid
List (a) one similarity and (b) one difference between Chlamydia and viruses.
(a) Both are obligate intracellular parasites.
(b) Chlamydia contains both DNA and ribosomes; viruses do not have ribosomes.
Viruses are able to be observed using a light microscope.
False
Viruses that contain a many-sided capsid are generally referred to as ____________.
Polyhedral
Viral size it typically measured in __________.
Nanometers (nm)
Which of the following viral multiplication events involves decomposition of the viral capsid?
Uncoating
External protein layer that functions in protection
Capsid
External lipid layer that functions in host-immune system evasion
Envelope
Protein-carbohydrate
Spikes
A(n) ________ is a virus that infects bacteria cells.
Bacteriophage
All viruses are obligatory intracellular parasites.
True
The term “Retroviridae” refers to the ____ name of a virus.
Family
All viruses contain DNA.
False
Where does RNA nucleic acid synthesis occur?
Cytoplasm
No viral enzymes
DNA virus
Virion contains RNA polymerase
RNA virus
Virion contains reverse transcriptase
Retrovirus
Which of the following in not a characteristics of all viruses?
Contain ribosomes
Non-enveloped viruses enter a host cell via ________ , while enveloped viruses enter a host cell via ________.
receptor-mediated endocytosis, fusion
Which of the following viruses is considered a DNA virus?
Simplexvirus
