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TCA cycle

biosci 106

QuestionAnswer
3 stages of Aerobic respiration Glycolysis,TCA cycle, ETC
TCA cycle: -produces NADH,FADH2,ATP,CO2 -breakdown of carbs(&lipids,protein) -
Yield of cycle 2CO2+ 3NADH+FADH2+GTP
Steps 1-4 -produce CO2 -high E NADH
steps 5-8 -regeneration of oxaloacetate carrier -NADH,FADH2,GTP=ATP
Regulation -isocitrate dehydrogenase -pyruvate dehydrogenase -pyruvate carboxylase
isocitrate dehydrogenase regulation - ADP,NAD+ (+ve) -NADH2 (-ve)
Pyruvate dehydrogenase regulation - ATP,NADH,Acetyl-CoA (-ve)
pyruvate carboxylase regeneration -activated by increase in Acetyl-Coa
2 major routes of pyruvate -oxidation of C -conversion to starting materials for biosynthesis
Created by: meglet
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