Select the correct answer: Lactate dehydrogenase (LDH) plays an essential role in an exercising muscle, especially when the level of excursion surpasses the ability of circulatory systems ability to supply adequate oxygen. What is the main reason LDH is so important to the muscle under these conditions?   A)It removes excess lactic acid from the muscle to create pyruvate. B)It produces NADH for energy while converting pyruvate into lactate. C)It resupplies NAD+ to glyceraldehyde 3-phosphate dehydrogenase. D)It decreases pH thus decreasing the dissociation rate of oxygen from hemoglobin. E)It produces one mole of ATP via substrate level phosphorylation.

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Metabolic pathways

Metabolism is defined as the group of life-supporting, enzyme-mediated chemical reactions in organisms. A metabolic pathway is a set of these chemical reactions that involve anabolism (synthesis of complex biomolecules) and catabolism (breakdown of biomolecules into small molecules) that occur inside a cell. Metabolites are the reacting substances, products, and intermediate substances of an enzymatic process that are altered by a series of chemical events catalyzed by enzymes.