Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 6.5, Problem 2TQ
Summary Introduction
To review :
Advantages and disadvantages of replication by the host polymerase in comparison with using a polymerase encoded by its own genome.
Introduction:
Viral replication is dependent on the form of the viral genome. The DNA (deoxyribonucleic acid) genome uses host replication enzymes. On the other hand, RNA (ribonucleic acid) genome requires an RNA-dependent RNA polymerase to produce an RNA template or a reverse transcriptase to create a DNA template which is the case of retroviruses.
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Which statement is true of viral replication?
A) virus attaches to a specific receptor site on the host-cell membrane. B) Once inside the cell, the viral capsid is degraded, and the viral nucleic acid is released. C) Virus uses the host cell’s machinery to replicate and new virus particles are released. D) All of the above
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Multiple Choice
The virus carries genes that will interfere with host cell activities.
The viral DNA sequences could still cause a disease.
Since the viral DNA sequences no longer contain essential genes for viral replication the host cell may not be able to replicate either.
The integration could disrupt an essential gene or genes.
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Microbiology: An Evolving Science (Fourth Edition)
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