BIOL 1090 Study Guide - Midterm Guide: Electron Transport Chain, Intermembrane Space, Phospholipid
20 Apr 2016
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Mitochondria are usually depicted as oval double membrane organelles: undergo rounds of fusion and fission and their shape can change to be considered tubular 1. There is an outer membrane, an inner membrane and between the two membranes there is an inter membrane space (region) Cristae have a lot of things happening on them. Outer mitochondrial membreane: high lipid, low protein, contains many ezymes with diverse metabolic functions, porins are large channel proteins and when open, membrane is freely permeable. Inner mitochondrial membrane: high protein:lipid ratio 3:1, double-layered folds = cristae. Contain machinery for aerobic respiration and atp formation. Rich in a phospholipid called cardiolipin: aqueious compartments of mitochondria. Mitochondrial dna (mtdna: encodes polypeptides that are integrated into the imm, Major function of mitochondrion ribosomes, trna: provide cells with energy (atp) obtained from glucose, glycolysis. Occurs in the cytoplasm outside the mitochondria: pyruvic acid oxidation. Occurs entirely in the mitochondrial matrix: tricarboxylic acid (tca) cycle (kreb cycle)
