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