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 about poliovirus?1 It doesn't carry any protein tools in its capsid. It has an IRES region at the 5 prime end of its RNA. It has a small genome. It leaves the cell by budding. 2. 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. Chopping and shredding cellular mRNAs Starting the production of immediate early mRNAs. Helping the capsid get out of the nucleus. 3. Chickenpox is not really a pox family virus.1 True False 4. From which cell part does herpes get its envelope?1 from the Golgi body from the nucleus from the ER from the outer (plasma) membrane 5. Both polio and herpes are viruses that like to migrate into nerve cells.1 True False 6. 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. 7. What does the poliovirus do in its replication complexes?1 Makes capsid proteins Does its entire life cycle Assembles the capsids Makes copies of its genome 8. Proteins “scissors” (proteases) can cut any protein.1 True False 9. Which virus chops and shreds cellular DNA inside the nucleus?1 herpes polio both neither 10. There are many herpes family viruses that don’t infect humans.1 True False 11. Which of these cell receptors does poliovirus use?1 ACE2 CD155 MHC1 heparan sulfate CD4 sialic acid 12. Polio and herpes are equally destructive to Golgi bodies.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 the cell will lose its ability to identify itself. So more ATP energy will be available for making viral proteins. 14. 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. It assembles its capsids in the nucleus. Most people are infected with at least one type of herpes virus. 15. Which one of these events in the life cycle of herpes occurs outside the nucleus?1 Assembly of the capsids Transcription of mRNAs Replication of the genome Manufacturing of glycoproteins VIRUSES lesson 3: History of discovery VIRUSES lesson 5: How Viruses Enter Cells Back to: VIRUSES lesson 4: Bacteriophages
