Explanation:
When the stomach digests food, the carbohydrate (sugars and starches) in the food breaks down into another type of sugar, called glucose. The stomach and small intestines absorb the glucose and then release it into the bloodstream.
Now if i'm going to be honest if you mean how long as in time wise it takes for your body to break down the glucose and for it to end up in your mitochondria, I do not know but ill explain the process and ill bold key words from start to end where the glucose goes.
The breakdown processes must act on food taken in from outside, but not on the macromolecules inside our own cells. First the enzymatic breakdown of food molecules is therefore digestion, which occurs either in our intestine outside cells, or in a specialized organelle within cells, the lysosome. (A membrane that surrounds the lysosome keeps its digestive enzymes separated from the cytosol) In either case, the large polymeric molecules in food are broken down during digestion into their monomer subunits, as proteins into amino acids, polysaccharides into sugars, and fats into fatty acids and glycerol. Through the action of enzymes. After digestion, the small organic molecules derived from food enter the cytosol of the cell, where their gradual oxidation begins. Oxidation occurs in two further stages of cellular catabolism. Then in the cytosol and ends in the major energy being converted organelle, the mitochondrion, in the end it is entirely confined to the mitochondrion.
