Food Flashcards
what is a balanced diet
eating a wide variety of foods to provide our bodies with all the substances that are needed
what are some nutrients
carbohydrates, proteins, fats, vitamins and minerals
what are nutrients
substances that provides the raw materials for making other substances that our body needs.
why is carbohydrate needed
for energy
examples of carbohydrates
starch and sugar
good sources of carbohydrates
pasta and bread
why is protein needed
for growth and repair
good sources of protein
meat and beans
why are vitamins needed
for heath
examples of vitamins
vitamin C
good sources of vitamins
fruits and vegetables, organs contain lots of vitamin C
why are minerals needed
for health
examples of minerals
calcium
good sources of minerals
fruits, vegetables and dairy products
why is fibre needed
keeps intestines clean and healthy , prevents constipation
good sources of fibre
wholemeal bread
why is water needed
dissolves substances and fills up cells
how do you test for starch
two drops of iodine
what colour does starch turn iodine
blue-black
how do you test for protein
a five drops of biuret
what colour does protein turn biuret
purple
how do you test for fat
rub a food sample on white paper, hold it up to the light, if there is a greasy mark there is fat
what is the amount of chemical energy in food measured in
kilojoules (kj)
what can too much fat cause
heart disease and make you overweight
what are you if you are obsess
very overweight
what will happen if you eat to little
people starve and become weak
