VIRUSES lesson 9: The Body Fights Back Quizellenj2022-09-06T11:53:53-04:00 Please sign up for the course before taking this quiz. 1. Which of these cells has a perforin gun?1 B cell dendritic cell NK macrophage T helper 2. The Y-shaped antibodies that B cells make will stick to any virus.1 True False 3. Which cell can feel the absence of MHC-1 flags?1 killer T cell NK macrophage B cell 4. Killer T cells must get permission from T helper cells before killing a body cell.1 True False 5. Why do the phagocytes (roaming eaters) have MHC-2 clips on their surface?1 For communication with other phagocytes. For showing bits of protein to T helper cells. Only for identification as "self." For sensing viral dsRNA. 6. Skin is a good barrier against viruses because the outer layer is made of dead cells.1 True False 7. Which organelle digests things?1 mitochondria ER lysosome Golgi body 8. This lesson showed all the cell types in the immune system.1 True False 9. Some of your cells were built with atoms and molecules that used to be part of viruses.1 True False 10. How does RIG-1 work?1 It kills viruses when triggered. It bends in half when triggered. Its shape straightens out when it is trigger. It goes into the nucleus when triggered. 11. All the viral sensors are designed to stimulate production of interferon (IFN).1 True False 12. What are granzymes?1 Enzymes that digest all the proteins in the host cell. Chemical toxins that tell the cell to shred its DNA. Granular proteins that self-assemble to make a hole. 13. Interferon causes many anti-viral proteins to be made, and we know exactly what each one does.1 True False 14. Which of these is NOT a sensor molecule?1 MDA-5 MHC-1 RIG-1 TLR-3 15. Which of these cells will eat anything that is covered in Y-shaped antibodies?1 NK cell macrophage B cell T cell VIRUSES lesson 8: Viruses Inside Cells VIRUSES lesson 10: Vaccines and anti-virals Back to: VIRUSES lesson 9: The Body Fights Back
