The energy system that has the slowest rate of ATP replenishment is oxidative phosphorylation.

Question

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Oxidative phosphorylation, which occurs in the mitochondria, requires a series of complex reactions and the use of oxygen to produce ATP. Although it provides a large amount of ATP, the process is slow compared to anaerobic respiration (glycolysis and lactic acid system) or the phosphagen system, which can produce ATP more quickly but in smaller quantities.

The Energy System That Has the Slowest Rate of ATP