Answer :
One molecule of glucose is converted into two molecules of pyruvate by the cytosolic process known as glycolysis, which also results in the net generation of two molecules each of ATP and NADH (nicotinamide adenine dinucleotide).
To refuel ATP in muscle, three energy mechanisms work: phosphoglycation, glycolysis, and mitochondrial respiration. While glycolysis and the mitochondria are in charge of cellular ATP synthesis, the sarcoplasmic reticulum (SR) is the main regulator of calcium storage, release, and reuptake in skeletal muscle. Due to their high energy needs, skeletal muscle cells have many mitochondria that enable them to produce enough ATP. The process by which cells produce ATP by dissolving the organic materials in food is known as cellular respiration. Muscle cells have the capacity to make ATP either by aerobic respiration, also known as breathing with oxygen, or through anaerobic respiration, also known as fermentation or anaerobic glycolysis.
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