BIOL130 Lecture : Oxford Tutorial Notes Contains all the information you need for your 5 minute presentation on each of the 3 topics for Bio 130 Tutorial!
Document Summary
Phagocytosis is the process where materials are taken into the cell. It is also known as cell-eating because that"s what the process resembles. In this process, the phagocyte, such as macrophages or neutrophils (which are types of white blood cells in mammals) recognize invading organisms (such as pathogens) as well as damaged or dying cells and debris. Once recognized, receptors on the surface of the phagocyte bind to the receptor sites on the invading organism which initiates the phagocytic process. Once inside the cell, a lysosome containing lysosomal enzymes from the golgi complex fuses with the phagosome, forming a phagolysosome. However, this isn"t always the case; some bacteria have ways of hijacking the phagocytic process to survive. I"ll mention 3 different examples or cases: bacteria responsible for tuberculosis (mycobacterium tuberculosis) is taken into the cytoplasm as usual, but inhibits the fusion of the lysosome with the phagosome that"s enclosing the bacteria.