Oxidative sources provide far more available energy than nonoxidative or immediate energy sources. The potential sources of oxidative energy include sugar, carbs, fats and amino acids. Through this process, far more energy is liberated from a glucose molecule than other processes, since the process of glucose catabolism is carried much farther.
Glucose + O2 ----oxidative metabolism---->36ATP + CO2 + H2O
Fats and amino acids can only be catabolized by oxidative metabolism. Fat metabolism results in the release of far more energy:
Palmate + O2 ----OM----> 129ATP + CO2 + H20
In order to break down amino acids for energy, the nitrogen residue must first be removed- either through transamination (transfer) or oxidativer deamination in the liver (removal).
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