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