1. Which of the below food substances provide the body with energy?

Question

the following are the food substances required by human: water, carbohydrates, fats, proteins, mineral salts, vitamins and roughage

2. state the unit used to measure the energy value of food.

3.name the apparatus used to measure the energy value of food.

4.which food substance is not absorbed by the body at all?

Answer 1

1. Carbohydrates, fats, and proteins.  The body prefers carbohydrates.

2.  The Calorie (the c is capitalized because it denotes the actual kilocalorie)

3. Calorimeter

4. I'm guessing roughage because I'm thinking that you mean fiber.

Answer 2

1. carbohydrates

2. SI unit of energy, the joule

3.  Not sure, mass maybe ie calorimeter

4.Proteins(amino acids), they must be consumed every day