Bio 2010 - Microbiology » Spring 2023 » Chapter 13 Quiz

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

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