Bio 2010 - Microbiology » Spring 2023 » Chapter 13 Quiz

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

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