BIOMOLECULES AND ENZYMES

Detailed explanation-1: -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. That translates to between 225 and 325 grams of carbs a day.

Detailed explanation-2: -Carbohydrates provide 4 calories per gram, protein provides 4 calories per gram, and fat provides 9 calories per gram.

Detailed explanation-3: -The IOM calculated an acceptable macronutrient distribution range for carbohydrate (45%-65% of energy), protein (10%-35% of energy), and fat (20%-35% of energy; limit saturated and trans fats).

Detailed explanation-4: -The Bottom Line The acceptable macronutrient distribution ranges (AMDR) are 45–65% of your daily calories from carbs, 20–35% from fats and 10–35% from protein. To lose weight, find a ratio you can stick with, focus on healthy foods and eat fewer calories than you burn.

Detailed explanation-5: -As a Percent of Calories Carbohydrates contribute four calories per gram; the USDA recommends that between 45 and 65 percent of your total caloric intake should come from carbohydrates. Based on a 2, 000-calorie diet, this would equate to between 225 and 325 grams of carbohydrates daily.