BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The USDA recommends that 45 to 65 percent of your total daily calories come from carbohydrates.

Detailed explanation-2: -How many carbohydrates do you need? The Dietary Guidelines for Americans recommend that carbohydrates make up 45% to 65% of total daily calories. So if you get 2, 000 calories a day, between 900 and 1, 300 calories should be from carbohydrates.

Detailed explanation-3: -The Institute of Medicine and the American Heart Association recommend a total fat intake of 25-35 percent of calories. That’s about 80 grams of fat or less a day if you eat 2, 000 calories a day.

Detailed explanation-4: -Carbohydrate Digestion and Absorption The primary carbohydrates in the human diet are starches, sucrose, and lactose. Starches and complex polysaccharides comprise 60% of the digestible carbohydrates in the average adult Western diet.

Detailed explanation-5: -According to the 2015 Dietary Guidelines for Americans, adults in their 50s and older generally should get about 130 grams of carbohydrates per day. That translates to anywhere from 45 to 65 percent of your total daily calories.