BIOS 222 Lecture Notes - Lecture 17: Caspase, Protein Precursor, Fas Ligand
Document Summary
Control of cell numbers and cell size slide- Cells influenced by neighb"s imp diff btw multi cell animals and single cell org"s, is that simple animals need nutrients drives survival of org. multicell org depend on growth factors/survival factors, proteins that influence growth and dev. Making things cell needs to have mature cell in g0 most of time. Nat prog of cell is to not survive apop. Need consistent feedback of neighboring cells to stay alive and funct. Apop is the norm. need ot fight to stay alive, receive info or go thru cell death. Cells go reverse g1-s barrier that blocks info,mitogens, need to list block of prolif and go thru synth of dna, then replication, then cell div. cell need to grow and funct in adult state. Diff between chrosis and 2 main types of prog cell death. Apop 1 and phagocytosis where cells are engulfed and go thru systematic breakdown.
