VIRUSES lesson 9: The Body Fights Back Quizellenjmchenry2021-10-01T23:32:10-04:00 Please sign up for the course before taking this quiz. Why do the phagocytes (roaming eaters) have MHC-2 clips on their surface?1 For communication with other phagocytes. For sensing viral dsRNA. Only for identification as "self." For showing bits of protein to T helper cells. Skin is a good barrier against viruses because the outer layer is made of dead cells.1 True False Which of these is NOT a sensor molecule?1 MHC-1 MDA-5 TLR-3 RIG-1 Which of these cells has a perforin gun?1 dendritic cell macrophage NK B cell T helper Which organelle digests things?1 mitochondria ER lysosome Golgi body Killer T cells must get permission from T helper cells before killing a body cell.1 True False Which of these cells will eat anything that is covered in Y-shaped antibodies?1 NK cell T cell macrophage B cell The Y-shaped antibodies that B cells make will stick to any virus.1 True False How does RIG-1 work?1 It goes into the nucleus when triggered. It kills viruses when triggered. Its shape straightens out when it is trigger. It bends in half when triggered. Interferon causes many anti-viral proteins to be made, and we know exactly what each one does.1 True False Some of your cells were built with atoms and molecules that used to be part of viruses.1 True False What are granzymes?1 Granular proteins that self-assemble to make a hole. Chemical toxins that tell the cell to shred its DNA. Enzymes that digest all the proteins in the host cell. Which cell can feel the absence of MHC-1 flags?1 macrophage killer T cell B cell NK All the viral sensors are designed to stimulate production of interferon (IFN).1 True False This lesson showed all the cell types in the immune system.1 True False VIRUSES lesson 8: Viruses Inside Cells VIRUSES lesson 10: Vaccines and anti-virals Back to: VIRUSES lesson 9: The Body Fights Back
