HUMAN NUTRITION

Detailed explanation-1: -Carbohydrates provide 4 calories per gram, protein provides 4 calories per gram, and fat provides 9 calories per gram. This information is also included at the end of the Nutrition Facts label on food packages.

Detailed explanation-2: -Of these six nutrients, carbohydrates, protein and fats provide calories. Each gram of carbohydrate and protein yield 4 calories/gram. Each gram of fat yields 9 calories.

Detailed explanation-3: -Since protein provides 4 calories per gram, if your goal is to consume 20 percent of your calories from protein you’d need to eat 400 calories, or about 100 grams, of protein per day when consuming a 2, 000-calorie diet.