Biology 2601A/B Lecture 9: 2601 Lec 9: Mitochondria
17 Oct 2015
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So many functions: regulation of metabolism, cell cycle control, immune response, cell signaling, thermoregulation, development. Most dna codes for protein that allow mitochondria to function. Mito cant function only with their own genome need nucleus genome not cell sufficient in terms of genetics. The endosymbiotic theory of eukaryotic cells proteobacteria (now) -- (the thing that was engulfed) (cid:224) aerobic heterotrophic prokaryote. Normally endosymbioant gets digested but this one stayed and didn"t digest: better able to produce energy now than many other things cause have this engulfed mitochondria. From greek: endon within, syn together, biosis living, ancestral host cell engulfs the prokaryotic cell, creates a vesicle around it by pinching off the cell membrane, vesicular membrane later becomes the outer mitochondrial membrane. Inner membrane: highly folded, increase functional area for energy production, called cristae. The primary role of mitochondria is to produce atp. = atp: breakdown of glucose to produce 2 pyruvate and atp.
