UNIT 3 - AOS 1B (NUTRIENT) Flashcards
nutrient
a substance that is used by living things to build tissue or provide energy in order to assist in growth or keep an organism alive
micro nutrient
nutrients that are required in small amounts, vitamins and minerals
macro nutrient
nutrients that are required in large amounts
protein, carbohydrates, fats
kilojules
a measure of the energy values of food
basal metabolic rate
the amount of energy expressed in calories that a person needs to keep the body functioning at rest
what are the three nutrients for energy
carbs, fats, protein
function of carbohydrates
provide the body with energy
2 different types of carbs : simple and complex
simple carbs + food source
quick energy not sustained
sugar and honey
complex carbs + food source
sustained energy
wholegrain bread, cereal
function of fibre (carbohydrates)
only plant foods provide fibre add bulk to faeces to prevent constipation which reduces risk of : - obesity - type 2 - colorectal cancer - cvd
fibre - food source
wholemeal products
wholemeal bread, fruit and veg with skin, bran flakes
protein - main function
growth, maintain and the repair of body cells
secondary function: provide energy
1G = 17kjs of energy
excess - stored as fat
deficiency - lead to lower bone density
protein - food source
red meat, egg, fish, dairy
soy, chickpeas
what are the four fats
- monounsaturated
- polyunsaturated
- saturated
- trans
function of all fats
to provide fuel for energy
1G=37kjs