digestion Flashcards
nutrient
a source of nourishment e.g. protein
starch
a large molecule made by plants as a form of food storage.
Food group
the category of food needed for certain body processes e.g. protein
balanced diet
the intake of food that provides the correct nutrients in the correct proportions
sugar
a sweet tasting compound of carbon, hydrogen and oxygen- such as glucose or sucrose
risk
the likelihood of a hazard causing harm
respiration
the process in living things in which oxygen is used release the energy in food
protein
a food group important for growth and tissue repair.
fat
a body tissue that acts as an energy store; a food group
energy
having the ability to do work
chemical energy
the energy stored in bonds between atoms which becomes available when atoms are rearranged in a chemical reaction.
kilojoule (kJ)
a unit of energy equivalent to 1000 joules
digestion
the breakdown of food in order to obtain energy
digestive system
a group of organs that together enable the digestion of food
circulatory system
the heart and blood vessels that transport essential substances around the body in blood.
