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sure that proteins are end up on the right side (sort to different parts of the cell)•Peroxisomes: location for redox reactionMembrane-bound organelles (1)55
•Endosomes: involve in exchanging material with the plasma membrane and outside world•Lysosomes: degradation (breakdown) of large lipids and proteins stomach of the cell•Mitochondria: oxidation of energy molecules to make ATP (oxidative phosphorylation and Kreb’s cycle)•Chloroplasts: found in plants and algae. Use sunlight to Membrane-bound organelles (2)56
Plausible Origin of Eukaryotic Cells•Requires change in cell shape driven by the cytoskeleton filaments•Likely, nuclear enclosure would be advantageous to protect DNA from entanglement and breakage 60•Primordial pre-eukaryotic cells may have been predatorial, eating other cells•The process by which cells eat other cells is called phagocytosis•Many current cells do this: from amoeba to our immune cells
Predatorial eukaryotic cells may also explain the origin of mitochondria and chloroplasts 61