Energy Flashcards
definition of energy
Energy is vital for life we get energy from the food we eat and then use it all the time in the body for different jobs
what are some uses or functions of energy
to allow the body to grow and develop
to move muscles and be physically active
to produce heat to keep the body warm
produce sound when talking singing and shouting
send a Messages from the brain to make the nerves work
make chemical reactions to take place in a cell
the digestive system
the brain etc
name some main sources of energy
carbohydrates
 fat
 protein
alcohol
definition of carbohydrates for energy
carbohydrates is the main source of energy for the body
some of the glucose is stored as glycogen in the liver and muscles and is used as a quick source of energy
when the foods containing carbohydrates are eaten
the body breaks them down and uses the glucose they contain for energy
The energy access from the carbohydrate that is eaten and not use is converted into fat and stored in the body
this happens very easily with sugars and particularly sugar in fizzy drinks
definition of fats for energy
fats and oils have the same energy values
fat is converted into glucose and use for energy
this is a relatively slow process so it is only used at the diet does not have enough carbohydrates
fat that is used for energy is stored in the special cells in the tissue under the skin or elsewhere in the body
definition of protein for energy
The body will only use protein if there is not enough carbohydrates or fat in the diet all the body stores off all the energy that has been used up
definition of alcohol in energy
drinking alcohol regularly can significantly contribute to energy intake and if the energy it provides is not used up it will be converted into fat stored in the body
main sources of energy in carbohydrates
sugars and starch
cereals
cereal products
honey and syrups
sugar used in cooking
main sources of energy in fat
Foods thats contain visible fats and oils
and invisible fats abd oils
Main sources of protein for energy
meat, poultry ,fish ,dairy foods
cereals , nuts
main sources of alcohol for energy
beers wines spirits
what is energy dense
Energy dense is foods that contain a high proportion of fats and carbohydrates
what are some examples of Energy dense foods
chocolate bars pastries cakes biscuits sausages pies pizzas
what are some affects of deficiency of energy in the diet
The body loses weight
why does the body lose weight when it is deficient of energy
if there is not enough energy in the diet to meet the needs of the body the energy stored in the body fat will be used up this will gradually reduce the fat stores
