<prompt> Toxicity of ethanol is due to:Increased NADHNAD ratioDecreased lactatepyruvate ratioInhibition of gluconeogenesisStimulation of fatty acid oxidation  <response>: Ans. A. Increased NADHNAD ratioHigh concentration of NADH leads to high NADHNAD ratio. This is the basic cause of all metabolic alteration in alcoholism. 