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Cellular respiration, Glycolysis can not used only because it use NAD+ and…
Cellular respiration
steps
Stage1:Glycolysis(totally 10 steps)
Aerobic
STAGE 2:Breakdown of pyruvate
In mitochondrial matrix
enter by outer membrane channel then H+/pyruvate symporter
NOTE:mitochondrial matrix have high PH (low H+)
2 pyruvate broken (by pyruvate dehydrogenase)+2CO2 is removed =2 acetyl CoA+CO2+2 NADH
NOTE:yield=1NADH for each pyruvate
STAGE3: Citric Acid cycle
STAGE4:Oxidative Phosphorylation
High energy electrons removed from(NADH/FADH2)to make ATP
1-ETC:electron transport chain
in a series of redox reactions
1 more item...
2-Phosphorylation by ATP synthase (stage 5)
mitochondrial membrane impermeable to H+ so it pass through ATP synthase
1 more item...
enter:(CO2/acetyl CoA)-regenerated:(Oxaloacetate)
1-Acetyle is removed from CoA and attached to oxaloacetate(Oxaloacetate+Acetly=citrate(citric asid)
2-series of steps=4CO2+2ATP+6NADH+2FADH2)
non-aerobic
Fermentation(breaking molecules without net O2)
NOTE: this is for organisms that can only use O2 as a final electron acceptor
Other acceptors
E.coli can use nitrate (NO3-) as a final electron acceptor
E.coli have a different mitochondria membrane
ONLY:NADH dehydrogenase/ Ubiquinone/Cytochrome b/Nitrate reductase /ATP synthase
for each Glucose
2-Cleavage:(break 6 carbon molecule to 2 G3P)
1-energy investment:(2ATP hydrolyzed=fructose-1,6 bisphosphate)
3-Energy liberation:(2G3P broken into 2 pyruvate +2NADH+4ATP)
NOTE:net yield =2ATP
obtaining energy from organic molecules to make(ATP/NADH/FADH2)
C6H12O6+6O2---->6CO2+6H2O
Glycolysis can not used only because it use NAD+ and make to much NADH (dangerous situation)
2-yeast convert it to ethanol
1-Muscle cells reduce the pyruvate tp lactate