2.25 - Functions and sources of a balanced diet

Edexcel IGCSE Biology

Carbohydrates

Carbohydrates

• found in rice, potatoes, maize, bread, fruits

• needed for: energy released from sugars, energy stored as glycogen

Protein

• found in: meat, fish, eggs, dairy, legumes

• needed for: growth and repair, cell cytoplasm, muscles, enzymes, amino acids

Lipids

• found in: fatty/oily foods

• needed for: energy stores, insulation

Vitamin A

• found in: meat, eggs, carrots

• needed for: forms pigment for vision

Vitamin C

• found in: citrus fruits

• needed for: healthy skin

Vitamin D

• found in: dairy, sunlight

• needed for: bones

Calcium

• found in: dairy

• needed for: heatlh bones and teeth

Iron

• found in: red meats, leafy veg, legumes

• needed for: haemoglobin

Water

• found in: drinks

• needed for: cytoplasm, body fluids

Fibre

• found in: wholegrain cereal, fruits, veg