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BIO 171 MODULE 6 TEST- Portage Learning

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BIO 171 MODULE 6 TEST- Portage Learning True or False: Because the genome is contained within an enclosed space, (much like the nucleus of a cell) viruses are classified as eukaryotic - ANSFalse. V ... iruses are neither eukaryotic nor prokaryotic True or False: Although viruses may contain their genome within an enclosed space (much like the nucleus of a cell), it is considered neither eukaryotic nor prokaryotic - ANSTrue Describe the two basic components of a virus (short answer) - ANSA 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 - ANSEnvelope The envelope surrounds the _____ of some viruses - ANSCapsid True or False: You would expect to see a viral envelope on a virus infecting a plant cell - ANSFalse. 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 - ANSFalse: Not all the viruses have envelopes Rank the following viruses based on their size from largest to smallest: orthomyxovirus, poliovirus, variolavirus - ANSVariolavirus>Orthomyxovirus>Poliovirus Rank the following viruses based on their size from largest to smallest:Paramyxovirus, Poliovirus, Smallpox virus - ANSSmallpox>Paramyxovirus>Poliovirus True or False: Viral replication occurs after it attaches and enters the host cell - ANSTrue. 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. - ANSFalse. The viral genome is never replicated before attachment and entry regardless of its level of infectivity. Place the following viral life cycle steps in order beginning with viral attachment and provide a description of each step (short answer) - ANSUncoating: the viral capsid disassembles Release: New virus particles are produced and leave the cell Replication: the viral genome is the 'blueprint' to make copies of itself Attachment: viral receptors bind to host proteins on the surface of the cell Entry: the virus fuses with the host membrane and enters the cell New Infection: newly produced viruses that left the host cell now go on to infect new cells A virus that infects bacteria is called a _____ and contains a _____ -side polygon capsid (fill in the blank) - ANSBacteriopha [Show More]

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