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Fundamentals of Molecular Virology Study Set 1

Biology

Quiz 27 :

Viruses of Algae and Mimivirus

Quiz 27 :

Viruses of Algae and Mimivirus

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There is a 1788bp sequence in the middle of the genome of PBCV-1,a phycodnavirus,that does not code for any proteins.What is the function of this region of the genome?
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Answer:

A

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What does mimivirus have in common with poxviruses?
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Answer:

D

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The virion of the chlorovirus PBCV-1 has a spike located at one of the 12 pentameric vertices.Which of the following describes the function of this spike?
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Answer:

B

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What does the name "mimivirus" refer to?
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The coccolithoviruses encode enzymes that produce the sphingolipid ceramide.What is the proposed function of this lipid in infected cells?
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Which of the following represents the group of organisms infected by phycodnaviruses?
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Which of the following characteristics distinguishes the coccolithoviruses from the chloroviruses,which are both member of the phycodnavirus family?
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Upon infection with a coccolithovirus,the microalgal host cell may switch from the usual diploid life stage to a haploid cell.Which of the following describes the advantage this has for the host cell?
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The primary capsid protein of the phycodnavirus PBCV-1,Vp54,is glycosylated.Which of the following describes how the viral protein is thought to acquire its sugar residues?
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All of the following virus families are members of the superfamily of Nucleo-Cytoplasmic Large DNA viruses EXCEPT...
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Which of the following describes the primary distinguishing feature of the prasinoviruses?
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Which of the following mechanisms is thought to have caused the mimivirus genome to become so large?
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While mimiviruses encode more of the components of the protein synthesis machinery than other viruses,they still do not produce which of the following?
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Which of the following may explain why mimiviruses encode a high number of DNA repair enzymes?
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All of the following characteristics are common to the virions of all of the phycodnaviruses EXCEPT:
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One of the reasons why the phcyodnaviruses are so diverse is that their hosts are ancient and equally as diverse.
True False
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Which of the following statements about the phaeoviruses,members of the phycodnavirus family,is FALSE?
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Like most other eukaryotic viruses,the entire virion of the chlorovirus PBCV-1,a phycodnavirus,enters the host cell and releases the viral genome into the nucleus.
True False
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Which of the following statements describes a characteristic of the late genes of the phycodnavirus PBCV-1?
Multiple Choice
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The prasinovirus which infects the green alga Ostreococcus only produces 6-15 virus particles per infectious cycle.Which of the following explains why the burst size is so small?
Multiple Choice
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