Bio 2010 - Microbiology » Spring 2023 » Chapter 13 Quiz

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

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