how is energy obtained from feed nutrients

Best answer


Energy comes from the three main nutrientscarbohydrates, protein, and fats, with carbohydrates being the most important energy source. In cases where carbohydrates have been depleted, the body can utilise protein and fats for energy. Your metabolism is the chemical reactions in the body鈥檚 cells that change this food into energy.

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  • What is the source of energy in food?

  • Foods contain a lot of stored chemical energy; when you eat, your body breaks down these foods into smaller components and absorbs them to use as fuel. Energy comes from the three main nutrients carbohydrates, protein, and fats, with carbohydrates being the most important energy source.

  • How do you calculate the amount of energy from food?

  • To calculate the energy available from a food, multiply the number of grams of carbohydrate, protein, and fat by 4,4, and 9, respectively. Then add the results together. For example, 1 slice of bread with a tablespoon of peanut butter on it contains 16 grams carbohydrate, 7 grams protein, and 9 grams fat : 16g carbohydrate x 4 kcal/g = 64 kca l

  • What is energy and where does it come from?

  • Energy comes from the three main nutrients carbohydrates, protein, and fats, with carbohydrates being the most important energy source. In cases where carbohydrates have been depleted, the body can utilise protein and fats for energy.

  • How do calories in food give us energy?

  • Calories in food give us energy Food provides units of energy in the form of calories that give our bodies fuel to perform all functions from the most basic like breathing to more complicated activities. Energy comes from the macronutrients — carbohydrates, fat and protein — found in all foods.

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