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