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 virus chops and shreds cellular DNA inside the nucleus?1 neither polio both herpes 3. There are many herpes family viruses that don’t infect humans.1 True False 4. How long can a herpes virus stay in its lysogenic (dormant) stage?1 For several months. For almost a year. For the lifetime of the host. Until the host reaches adulthood. Until the host catches another virus. 5. 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. 6. What does the poliovirus do in its replication complexes?1 Makes copies of its genome Assembles the capsids Makes capsid proteins Does its entire life cycle 7. 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 8. Proteins “scissors” (proteases) can cut any protein.1 True False 9. Which of these cell receptors does poliovirus use?1 sialic acid CD4 ACE2 heparan sulfate CD155 MHC1 10. Which of these is NOT true about poliovirus?1 It leaves the cell by budding. It has a small genome. It doesn't carry any protein tools in its capsid. It has an IRES region at the 5 prime end of its RNA. 11. 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 12. Chickenpox is not really a pox family virus.1 True False 13. 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. 14. Polio and herpes are equally destructive to Golgi bodies.1 True False 15. Which of these is NOT true of herpes simplex?1 It has several different kinds of glycoprotein spikes. 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. VIRUSES lesson 3: History of discovery VIRUSES lesson 5: How Viruses Enter Cells Back to: VIRUSES lesson 4: Bacteriophages
