The final acceptor of electrons in the electron transport chain is molecular oxygen. Electron transport chains are used for extracting energy via redox reactions from sunlight in photosynthesis or, such as in the case of the oxidation of sugars, cellular respiration.
On their website, the American Diabetes Association directs diabetics to eat between 45-60 grams of carbohydrates at each meal. Assuming a person eats three meals a day, this advice works out to telling diabetics to eat a minimum of 135 grams to a maximum of 180 grams of carbohydrates per day.
What I've learned in my diabetic class is that we can have 45-60 grams of carbs per meal and 15-25 grams of carbs per snack. Also 10-15 grams of fat per meal, no more than 35-55 grams of fat per day. You can also subtract from your total carb grams any fiber grams. I hope this helps you. I was told at classes I was to try to stay at 3 carb servings a meal, 1 carb servig = 15 grams.