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 is NOT true of herpes simplex?1 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. It assembles its capsids in the nucleus. 2. Which of these is NOT true about poliovirus?1 It has a small genome. It leaves the cell by budding. It doesn't carry any protein tools in its capsid. It has an IRES region at the 5 prime end of its RNA. 3. Which one of these events in the life cycle of herpes occurs outside the nucleus?1 Manufacturing of glycoproteins Transcription of mRNAs Assembly of the capsids Replication of the genome 4. Which virus chops and shreds cellular DNA inside the nucleus?1 polio neither both herpes 5. Chickenpox is not really a pox family virus.1 True False 6. Both polio and herpes are viruses that like to migrate into nerve cells.1 True False 7. Proteins “scissors” (proteases) can cut any protein.1 True False 8. 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. Starting the production of immediate early mRNAs. Attaching to a receptor on the surface of a cell. 9. How long can a herpes virus stay in its lysogenic (dormant) stage?1 Until the host catches another virus. For the lifetime of the host. Until the host reaches adulthood. For several months. For almost a year. 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 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. 11. Which of these cell receptors does poliovirus use?1 CD4 heparan sulfate CD155 MHC1 ACE2 sialic acid 12. Polio and herpes are equally destructive to Golgi bodies.1 True False 13. There are many herpes family viruses that don’t infect humans.1 True False 14. What does the poliovirus do in its replication complexes?1 Assembles the capsids Does its entire life cycle Makes capsid proteins Makes copies of its genome 15. From which cell part does herpes get its envelope?1 from the ER from the nucleus from the Golgi body from the outer (plasma) membrane VIRUSES lesson 3: History of discovery VIRUSES lesson 5: How Viruses Enter Cells Back to: VIRUSES lesson 4: Bacteriophages
