Flashcards
Biology 4.1.1 Antigen presentation
Cards in this deck (9)
- 1What type of phagocyte turn into antigen presenting cells?Macrophages
- 2What is the name of the process in which a macrophage engulfs a microbe?Phagocytosis
- 3What happens before the pathogen is engulfed?The antigen on the pathogen attaches to receptors on the macrophage
- 4What happens when a macrophage engulfs a pathogen?1) It is enclosed in a vesicle (phagosome)
2) The lysosomes fuse with the phagosome forming a phagolysome
3) The pathogen is digested by hydrolytic enzymes within the lysosome
4) Fragments of the antigen is presented on the surface of the macrophage and waste products are removed - 5By what procewss does waste products leave the macrophage?Exocytosis
- 6What key word is used to describe an enzyme breaking down a pathogen?Digests
- 7How do neutrophils deal with pathogens?Similarly to macrophages, the antigens of the pathogen bind to receptors and is englufed by endocytosis forming a phagosome. Lysosomes fuse with the phagosome and release lytic enzymes into it. The pathogen is completly destroyed and the neutrophil dies
- 8Give a difference between how macrophages and neutrophils deal with pathogens~Macrophages don't fully destroy the pathogen so it can be presented and the macrophage stays alive after
~Neutrophils fully destroy the pathogen and die after - 9What are the two things that happen once a pathogen is found?~It is englufed by macrophages, releases cytokines to activate T lymphocytes, producing T killer and T helper cells (the T helper cells can turn into memory (T cells)
~Complimentary B lymphocytes engluf patjhogen and divide to form many memory B cells and plasma cells that produce antibodies
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- User has deleted their subject information Flashcards on Biology 4.1.1 Antigen presentation, created by Deleted user on 07/06/2019.
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- Created by Sam Gunnell · Jun 5, 2019
- Copied by Sam Gunnell · Jun 7, 2019
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