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