Portage Microbiology Exam #6 Questions and Answers Already Passed
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Portage Microbiology
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Portage Microbiology
Portage Microbiology Exam #6 Questions and Answers Already Passed
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...
portage microbiology exam 6 questions and answers already passed
true or false because the genome is contained within an enclosed space
much like the nucleus of a cell viruses are classified as eu
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Portage Microbiology Exam #6 Questions and Answers Already Passed 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 a nswer) ✔✔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: ortho myxovirus, 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. Place the following viral life cycle steps in order beginning with viral attachment and provide a description of each step (short answe r) ✔✔Uncoating: 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 cel l 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) ✔✔Bacteriophage; 20 -sided True or False: Structurally bacteriophages are similar to viruses that infect animals ✔✔False. Bacteriophages have a distinct composition and structure True or False. Structurally, bacteriophages are distinct from viruses that infect plant or animal cells. ✔✔True. Bacteriophages are structurally distinct from viruses that infect plant and animals cells. Identify the following components of a bacteriophage (picture) ✔✔1. Capsid 2. Collar 3. Tail 4. Base 5. Tail fib ers
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