BIOD 171module6 exam.docx - Question 1 2 2 pts True or...

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Question 1 2 / 2 pts True or False. Because the genome is contained within an enclosed space (much like the nucleus of a cell), viruses are classified as eukaryotic. True Correct! False False. Viruses are neither eukaryotic nor prokaryotic.
Question 2 5 / 5 pts Describe the two basic components of a virus.
Question 3 3 / 3 pts The envelope surrounds the _________ of some viruses.
Question 4 2 / 2 pts True or False. You would expect to see a viral envelope on a virus infecting a plant cell.
Question 5 1 / 3 pts Rank the following viruses based on their size from largest to smallest: Orthomyxovirus Poliovirus Variolavirus Your Answer: Orthomyxovirus variolavirus poliovirus Variolavirus (~200nm) > Orthomyxovirus (100-150nm) > Poliovirus (~30nm) Question 6 2 / 2 pts True or False: Highly infectious viruses undergo genome replication prior to viral attachment and entry. True
Correct! False False. The viral genome is never replicated before attachment and entry regardless of its level of infectivity . Question 7 2.5 / 5 pts Place the following viral life cycle steps in order beginning with viral attachment and provide a description of each step. Uncoating: Release: Replication: Attachment: Entry: New infection: Your Answer: Attachment Entry Uncoating Replication New infection Released 3- Uncoating: the viral capsid disassembles 5-Release: New virus particles are produced and leave the cell 4-Replication: the viral genome is the ‘blueprint’ to make copies of itself 1-Attachment: viral receptors bind to host proteins on the surface of the cell 2-Entry: the virus fuses with the host membrane and enters the cell
Question 8 3 / 3 pts A virus that infects bacteria is called a [answer1] and contains a [answer2] -sided polygon capsid.
Question 9 2 / 2 pts True or False. Structurally, bacteriophages are distinct from viruses that infect plant or animal cells.

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