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Cell Respiration (glucose) - Coggle Diagram
Cell Respiration (glucose)
Aerobic respiration
Citric acid cycle
Occurs in mitochondria matrix
Pyruvate oxidation phase
Pyruvate -> 1CO2 + 1NADH + 1H+ + 1AcetylCoA
Cycle phase
AcetylCoA -> 2CO2 + 1ATP + 3NADH + 3H+ + 1FADH2
Net yield
6CO2 + 2ATP + 8NADH + 8H+ + 2FADH2
Oxidative phosphorylation
Occurs in inner/outer mitochondria membrane
Electron transport chain
NADH and FADH2 - electron carriers
O2 - final electron acceptor
Pumps H+ ions from matrix to intermembrane space
Chemiosmosis
H+ gradient forces H+ ions back into matrix, powers ATP synthesis
ATP synthase - enzyme, rotary motor protein
Synthesizes ADP + Pi = ATP
10H+ ions = 3 ATP
Glycolysis
Occurs in cytoplasm
Energy payoff phase (produce 4 ATP)
Energy investment phase (invest 2 ATP)
Glucose breaks down into 2 pyruvate
Total product - 2NADH + 2H+ + 2H2O + 2pyruvate + 2ATP
Anaerobic respiration (fermentation)
Alcohol fermentation
Produces 2 ethanol
Releases CO2
Lactic acid fermentation
Produces 2 lactate
Does not release CO2
Control of respiration
Phosphofructokinase
Allosteric enzyme
High concentration of ATP inhibits enzyme
Low concentration of ATP activates enzyme