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311809
Glucose Oxidation
Descripción
Topic 3 - Metabolism Mapa Mental sobre Glucose Oxidation, creado por kathrynmoar el 29/10/2013.
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topic 3 - metabolism
topic 3 - metabolism
Mapa Mental por
kathrynmoar
, actualizado hace más de 1 año
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Creado por
kathrynmoar
hace más de 10 años
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Resumen del Recurso
Glucose Oxidation
Glycolysis
does not involve oxygen
little energy is produced - only 2 ATP per glucose
end products in presence of oxygen = pyruvate and NADH
NADH re-oxidation is achieved by the enzyme lactate dehydrogenase which converts pyruvate to lactate
lactate is released into the blood and recycled by the liver
Citric Acid Cycle
most of the cells energy is made in the mitochondria
occurs in matrix of mitchondria
pyruvate is fed into the citric acid cycle by acetyl-coenzyme A
Acetlyl CoA = acyl group carrier
Oxidative decarboxylation of pyruvate
two molecules of carbon dioxide are formed
two electrons are transferred to NAD+
3 NADH are produced
1 FADH produced
acetyl group is transferred to CoA
large free energy decrease
Electron transport chain
delta G for the transfer of electrons from NADH to oxygen to form water is -220kJ mol
determination of redox potentials
a more negative redox potential value signifies more readiness to donate electrons
Eo values
all coponents at 1M
hydrogen gas at 1 atmospheric pressure
pH = 7
relationship between Gibbs free energy and redox potential difference
delta G = -nFdeltaEo
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