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