VIRUSES lesson 9: The Body Fights Back Quizellenj2026-03-12T13:56:08-04:00 Please sign up for the course before taking this quiz. 1. Which of these cells will eat anything that is covered in Y-shaped antibodies?1 B cell macrophage NK cell T cell 2. Which of these is NOT a sensor molecule?1 RIG-1 MHC-1 MDA-5 TLR-3 3. Skin is a good barrier against viruses because the outer layer is made of dead cells.1 True False 4. The Y-shaped antibodies that B cells make will stick to any virus.1 True False 5. Killer T cells must get permission from T helper cells before killing a body cell.1 True False 6. Why do the phagocytes (roaming eaters) have MHC-2 clips on their surface?1 Only for identification as "self." For showing bits of protein to T helper cells. For communication with other phagocytes. For sensing viral dsRNA. 7. Which of these cells has a perforin gun?1 NK T helper B cell dendritic cell macrophage 8. Interferon causes many anti-viral proteins to be made, and we know exactly what each one does.1 True False 9. Which organelle digests things?1 ER lysosome mitochondria Golgi body 10. All the viral sensors are designed to stimulate production of interferon (IFN).1 True False 11. This lesson showed all the cell types in the immune system.1 True False 12. What are granzymes?1 Granular proteins that self-assemble to make a hole. Enzymes that digest all the proteins in the host cell. Chemical toxins that tell the cell to shred its DNA. 13. Some of your cells were built with atoms and molecules that used to be part of viruses.1 True False 14. How does RIG-1 work?1 It kills viruses when triggered. It goes into the nucleus when triggered. It bends in half when triggered. Its shape straightens out when it is trigger. 15. Which cell can feel the absence of MHC-1 flags?1 macrophage killer T cell B cell NK VIRUSES lesson 8: Viruses Inside Cells VIRUSES lesson 10: Vaccines and anti-virals Back to: VIRUSES lesson 9: The Body Fights Back
