VIRUSES lesson 4: Bacteriophages Quizellenj2022-07-18T21:51:40-04:00 Please sign up for the course before taking this quiz. 1. Which of these cell receptors does poliovirus use?1 ACE2 CD4 CD155 MHC1 sialic acid heparan sulfate 2. How long can a herpes virus stay in its lysogenic (dormant) stage?1 For almost a year. Until the host catches another virus. For several months. For the lifetime of the host. Until the host reaches adulthood. 3. Which one of these events in the life cycle of herpes occurs outside the nucleus?1 Transcription of mRNAs Assembly of the capsids Replication of the genome Manufacturing of glycoproteins 4. Chickenpox is not really a pox family virus.1 True False 5. What does the poliovirus do in its replication complexes?1 Does its entire life cycle Makes copies of its genome Assembles the capsids Makes capsid proteins 6. Which of these is NOT a job done by one of herpes’ tegument proteins?1 Helping the capsid get out of the nucleus. Chopping and shredding cellular mRNAs Starting the production of immediate early mRNAs. Attaching to a receptor on the surface of a cell. 7. Polio and herpes are equally destructive to Golgi bodies.1 True False 8. Why does herpes stop the ER from making MHC1 flags?1 So the cell will lose its ability to identify itself. So more ATP energy will be available for making viral proteins. So the infected cell can't alert immune system cells about the viral activity going on inside. 9. Proteins “scissors” (proteases) can cut any protein.1 True False 10. Both polio and herpes are viruses that like to migrate into nerve cells.1 True False 11. There are many herpes family viruses that don’t infect humans.1 True False 12. Which of these is NOT true of herpes simplex?1 Most people are infected with at least one type of herpes virus. It assembles its capsids in the nucleus. It enters the body through intestinal cells. It has several different kinds of glycoprotein spikes. 13. From which cell part does herpes get its envelope?1 from the outer (plasma) membrane from the nucleus from the Golgi body from the ER 14. Which of these is NOT true about poliovirus?1 It has an IRES region at the 5 prime end of its RNA. It leaves the cell by budding. It has a small genome. It doesn't carry any protein tools in its capsid. 15. Which virus chops and shreds cellular DNA inside the nucleus?1 both herpes neither polio VIRUSES lesson 3: History of discovery VIRUSES lesson 5: How Viruses Enter Cells Back to: VIRUSES lesson 4: Bacteriophages