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.   acceptance
B.   susceptibility
C.   resistance
D.   permission
Question #2
How do viruses reproduce?
A.   inserting nucleic acid into the host cell
B.   replication outside the host
C.   they divide by mitosis
D.   sexually, by external fertilization
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 Strain A attach to different receptors in order to gain entry
C.   Swine flu and Influenza A are the same viruses, with different names
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 lack a capsid
D.   they have DNA instead of RNA
Question #5
Which of the following is not true regarding viruses?
A.   All are true
B.   All have a protein capsid and envelope
C.   Release virions during cell lysis or budding
D.   All are obligate intracellular parasites
E.   May be DNA, RNA, Single, or Double-stranded
Question #6
Each of the following features is common to both bacteriophages and human viruses:
A.   assembly
B.   attachment
C.   uncoating
D.   penetration
Question #7
A virus consists of:
A.   RNA or DNA and a protein coat
B.   proteins, cell membrane and RNA
C.   RNA or DNA and a cell membrane.
D.   RNA and DNA and a protein coat
Question #8
The first step in all virus infections is which of the following?
A.   Transcription
B.   Migration to nucleus
C.   Attachment to cell receptor
D.   Fusion
E.   Uncoating
Question #9
A naked virus is one with out:
A.   an envelop
B.   a genome
C.   capsomers
D.   a capsid
Question #10
How are viruses different than bacteria?
A.   Viruses are smaller
B.   Viruses are obligate intracellularly
C.   Viruses do not replicate by binary fission
D.   All are true.

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