True or False: Because the genome is contained within an enclosed space, (much like
the nucleus of a cell) viruses are classified as eukaryotic
False. Viruses are neither eukaryotic nor prokaryotic
Describe the two basic components of a virus (short answer)
A virus has 1. genomic material comprised of either DNA or RNA and 2. a capsid, a membrane-
like protective structure that contains the genetic material, similar to the nucleus of a eukaryotic
cell
The _____ surrounds the capsid of some viruses
Envelope
The envelope surrounds the _____ of some viruses
Capsid
True or False: You would expect to see a viral envelope on a virus infecting a plant cell
False. The overwhelming majority of animal viruses are enveloped whereas the majority of
plant or bacteria-infecting viruses are not
, True or False: You would expect to see a viral envelope on a virus infecting a bacterial
cell
False: Not all the viruses have envelopes
Rank the following viruses based on their size from largest to smallest: orthomyxovirus,
poliovirus, variolavirus
Variolavirus>Orthomyxovirus>Poliovirus
Rank the following viruses based on their size from largest to smallest:Paramyxovirus,
Poliovirus, Smallpox virus
Smallpox>Paramyxovirus>Poliovirus
True or False: Viral replication occurs after it attaches and enters the host cell
True. The viral genome is never replicated before attachment and entry
True or False: Highly infectious viruses undergo genome replication prior to viral
attachment and entry.
False. The viral genome is never replicated before attachment and entry regardless of its level
of infectivity.
the nucleus of a cell) viruses are classified as eukaryotic
False. Viruses are neither eukaryotic nor prokaryotic
Describe the two basic components of a virus (short answer)
A virus has 1. genomic material comprised of either DNA or RNA and 2. a capsid, a membrane-
like protective structure that contains the genetic material, similar to the nucleus of a eukaryotic
cell
The _____ surrounds the capsid of some viruses
Envelope
The envelope surrounds the _____ of some viruses
Capsid
True or False: You would expect to see a viral envelope on a virus infecting a plant cell
False. The overwhelming majority of animal viruses are enveloped whereas the majority of
plant or bacteria-infecting viruses are not
, True or False: You would expect to see a viral envelope on a virus infecting a bacterial
cell
False: Not all the viruses have envelopes
Rank the following viruses based on their size from largest to smallest: orthomyxovirus,
poliovirus, variolavirus
Variolavirus>Orthomyxovirus>Poliovirus
Rank the following viruses based on their size from largest to smallest:Paramyxovirus,
Poliovirus, Smallpox virus
Smallpox>Paramyxovirus>Poliovirus
True or False: Viral replication occurs after it attaches and enters the host cell
True. The viral genome is never replicated before attachment and entry
True or False: Highly infectious viruses undergo genome replication prior to viral
attachment and entry.
False. The viral genome is never replicated before attachment and entry regardless of its level
of infectivity.
