BIOL 2021 Chapter Notes - Chapter 1.0: Apoptosis, Macrophage, Chromatin
2 Apr 2018
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Need to regulate division, growth, cell survival, and death. An adult has to balanced with cell death. Chromatin condenses and dna fragments are created (chopped) by polymerases. Cell surface blebs the cell surface bulges out and breaks up into membecome chemically modified so that macrophages can engulf them before their contents spill out. Neighbour cells or macrophages engulfs the dying cell. Necrosis is death by accident (picture c) Cell swells, bursts, and its contents spill out. Causes an inflammatory reaction cells of the immune system are sent there (tissue damage) Liver: balancing cell division and cell death so that organs remain the same size, eliminate damaged cells in adults, ex. Caspases: protease that cleaves and chops up proteins. A cascade occurs to amplify the activity of caspases. Q: how can cell suicide evolve if the dying cell leaves no progeny.
