The first means by which ATP is produced at the onset of contractile activity is

Question

Quizplus · Accepted Answer

The transfer of energy and phosphate from creatine phosphate to ADP is the first means of ATP production because it occurs very rapidly and can provide energy for muscle contraction in the absence of oxygen. Oxidative phosphorylation requires oxygen and takes longer to produce ATP, while glycolysis and degradation of myoglobin occur later in the process.

The First Means by Which ATP Is Produced at the Onset