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