Which of the following statements is true regarding energy generation for muscle contraction
One of the pathways for ATP regeneration is direct phosphorylation of ADP by creatine phosphate.; At rest and during light exercise, ATP is regenerated almost entirely by metabolic pathways that use oxygen.; Aerobic respiration refers to metabolic pathways that use oxygen.; The initial steps of glucose breakdown occur via a pathway called glycolysis, which does not use oxygen and is an anaerobic part of the metabolic pathway.