<P> Although humans consume a variety of carbohydrates , digestion breaks down complex carbohydrates into a few simple monomers ( monosaccharides ) for metabolism : glucose , fructose , and galactose . Glucose constitutes about 80 % of the products , and is the primary structure that is distributed to cells in the tissues , where it is broken down or stored as glycogen . In aerobic respiration , the main form of cellular respiration used by humans , glucose and oxygen are metabolized to release energy , with carbon dioxide and water as byproducts . Most of the fructose and galactose travel to the liver , where they can be converted to glucose . </P>
<P> Although humans consume a variety of carbohydrates , digestion breaks down complex carbohydrates into a few simple monomers ( monosaccharides ) for metabolism : glucose , fructose , and galactose . Glucose constitutes about 80 % of the products , and is the primary structure that is distributed to cells in the tissues , where it is broken down or stored as glycogen . In aerobic respiration , the main form of cellular respiration used by humans , glucose and oxygen are metabolized to release energy , with carbon dioxide and water as byproducts . Most of the fructose and galactose travel to the liver , where they can be converted to glucose . </P>
which carbohydrate does the body use for energy production during respiration
which carbohydrate does the body use for energy production during respiration
glucose
glucose