Food and energy Flashcards
What reagent is need for starch
what is the colour change
Iodine
yellow-brown to blue-black
What reagent is needed for sugar
what is the colour change
benedicts
blue to brick-red precipitate
what reagent is needed for protein
what is the colour change
biuret
blue to purple
what reagent is needed for fat
Ethanol
Name examples of simple sugars
Sucrose,fructose,lactose,glucose
Name some complex carbohydrates
Cellulose,glycogen,starch
what is meant by having a balanced diet
By eating all the nutrients in the correct proportions
why do we need protien
for growth and repair and is also a source of energy
what are fats also known as
Lipids
what are the 3 elements contained in carbohydrates,proteins and fats.
carbon,hydrogen and oxygen
what element is only found in protein
nitrogen
what is the energy requirement for:
~a newborn baby
~1 yr old
~2-3 yr old
~5-7 yr old
~girl 12-15
~boy 12-15
~office worker
~factory worker
~heavy manual worker
~2000 kj
~3000 kj
~6000 kj
~7500 kj
~9500 kj
~12000 kj
~11000 kj
~12500 kj
~15000 kj
