Biology- Balanced Diet

balanced diet

a diet that contains all seven nutrients in the correct proportions

seven essential components

carbohydrate, proteins, lipases (fats), vitamins, minerals, fibre, water

carbohydrates

proteins

helps growth and repair of tissues. Found in meat, beans, soya

lipases

Long-term energy storage and insulation. Found in fats and oils

vitamin C

Maintains healthy skin and gums. Found in citrus fruits

fibre

Adds bulk to food to help it move through the gut (prevents constipation). Found in whole grains, fruits, and vegetables

iron

Needed to make hemoglobin for healthy blood. Found in spinach, liver, meat

vitamin dih

helps build strong bones and teeth. Found in eggs, milk, liver

vitamin A

Healthy eyes and skin. Found in carrots, butter, milk, liver

Vitamin K

Helps with blood clotting. Found in kale, cabbage, and made by intestines bacteria.

energy requirements

Needs vary based on age, sex, height, activity level, or pregnancy

Food test: starch

Reagent: iodine solution. Starting color: Red- orange. Positive result: Blue- black

Food test: Glucose (sugar)

Reagent: Benedict’s solution. Starting color: Blue-black. Positive result: brick red

Finding energy in food

To find the energy value of a food , you burn the food under a tube of water and measure the temperature rise of the water