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