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3 main functions of protein?
- -help body grow
- - repair damaged / worn parts
- - regulate body processes
secondary function of protein?
what does body need in order for protein to function properly? what would happen otherwise
needs carbohydrates, otherwise body uses protein for energy instead of building
difference between comple/incomplete proteins?
- complete: supply all 9 essential amino acids
- incomplete: lacking 1 or more of essential amino acids
what is a better source of protein besides animal?
plants, less fat, more fibre
main function of carbs?
3 main types of carbs?
starch sugar fibre
which carbs are complex and which are simple?
complex: starches and fibre
why is fibre different?
doesnt provide energy
what are the 2 types of fibres, what are their functions?
soluble: dissolves in water, thickens stomach content, may reduce cholestrol
insoluble: contributes to bulk, promotes regular bowel movements. does not dissolve in water
which food groups provide fibre?
another name for fat/
essential fatty acids
4 main functions of fat?
promotes healthy skin, cel growth, carries vitamins to wherever needed
- provide reserve supply of energy
- cushions heart
how can fat help us eat less?
feel full longer
problems of fat?
- lots of calories
- increase risk of illness
- contributes to obesity
what is cholestrol?
fat-like substance, needed for body processes
what is lipoprotein?
helps cholestrol circulate in blood
name two types of lipoprotein
LDL: takes cholestrol in liver to where needed
HDL: picks up excess cholestrol and takes back to liver
what is hydrogenization?
missing hydrogen atoms arre added to an unsaturated fat to make it firmer
what is an antioxidant?
protects body cells + immune system from harmful chemicals
explain two categories of vitamisn
water soluble: dissolve in water vitamin c, b vitamins
- fat soluble: absorbed and transported by fat.
- vitamins a,d,e ,k
3 categories of minerals:
major: large amounts (calcium, posphorus)
electrolytes: maintain fluid balance (potassium, sodium)
trace minerals : small amounts, still important
what is osteoporosis?
condition where bones weaken and become porous
what is a phytochemical?
presence of disease, fighting nutrients in plant foods
why is water important?
keeps body temp normal, gets rid of waste