Bio 2010 - Microbiology » Summer 2021 » Chapter 13 Quiz

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Question #1
In order for a virus to infect the host cell, the virus must attach to a host cell receptor. Which of the following terms describes a ability to attach to an entry receptor?
A.   resistance
B.   permission
C.   susceptibility
D.   acceptance
Question #2
How do viruses reproduce?
A.   inserting nucleic acid into the host cell
B.   sexually, by external fertilization
C.   replication outside the host
D.   they divide by mitosis
Question #3
The sialic receptor is commonly used by Influenza strain A virus to gain entry to respiratory and digestive tissues. This season, a majority of the reported flu illness was caused by Swine flu, not Influenza A. Swine flue attacks the same cells as Influenza A. Which of the following statements must be true?
A.   both viruses use the same sialic receptor to gain cell entry
B.   Swine flu and Influenza A are the same viruses, with different names
C.   Swine flu and Influenza Strain A attach to different receptors in order to gain entry
D.   both viruses mutate so rapidly and must wait for the host cell receptor to mutate
Question #4
Retroviruses are different from viruses in that
A.   they infect bacteria only
B.   they have a unique enzyme
C.   they have DNA instead of RNA
D.   they lack a capsid
Question #5
Which of the following is not true regarding viruses?
A.   All are obligate intracellular parasites
B.   All have a protein capsid and envelope
C.   May be DNA, RNA, Single, or Double-stranded
D.   All are true
E.   Release virions during cell lysis or budding
Question #6
Each of the following features is common to both bacteriophages and human viruses:
A.   attachment
B.   penetration
C.   assembly
D.   uncoating
Question #7
A virus consists of:
A.   RNA and DNA and a protein coat
B.   proteins, cell membrane and RNA
C.   RNA or DNA and a protein coat
D.   RNA or DNA and a cell membrane.
Question #8
The first step in all virus infections is which of the following?
A.   Fusion
B.   Transcription
C.   Attachment to cell receptor
D.   Migration to nucleus
E.   Uncoating
Question #9
A naked virus is one with out:
A.   an envelop
B.   capsomers
C.   a capsid
D.   a genome
Question #10
How are viruses different than bacteria?
A.   All are true.
B.   Viruses are obligate intracellularly
C.   Viruses do not replicate by binary fission
D.   Viruses are smaller

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