BIOL 205 Lecture Notes - Lecture 21: Globular Protein, Membrane Protein, Endosymbiont
18 Nov 2016
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Biol 205 cell organelles chapter 4 con"t. Endosymbiont theory: theory that states that ancestral prokaryots (like mitochondria or chloroplast) were engulfed by ancestral eukaryotic cells that proved to be beneficial to both cells. Energy converting organelles: consist of mitochondria and chloroplast. Mitochondria: found in plants and animals; use glucose to make energy; the site of energy production/cellular respiration (o2 consumption) In cellular respiration, pyruvate/glucose is combusted with o2. C6h12o6 + 6o2 6co2 + 6h20 + atp: enclosed by a porous outer membrane, has an inner membrane with a complex membrane protein system. Highly folded (cristae) to increase surface area for respiration. Centre of mitochondria consists of the matrix (fluid that contains mitochondrial dna, ribosomes, and enzymes/globular proteins) Inside inner membrane, there is stroma (a thick fluid containing dna, ribosomes, and enzymes), thylakoids (a network of interconnected sacs), and granum (stacks of thylakoids and green chlorophyll molecules that capture solar energy)
