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