Food - biology Flashcards
Why do I need food.
To give us energy. To protect against disease. To keep us warm. For growth . For repair of our body cells.
What is our food made of
Carbohydrates. Fats . Protein . Vitamins .Minerals . Water
Food needed
Energy,growth,repair,protection against disease
5 major nutrients
Carbohydrates,fats,protein,vitamin,minerals.
Carbohydrates
Sugars,starch,fibre
Vitamin c
Citrus fruits,health skin,gums
Vitamin d
Milk , strong healthy bones
Calcium
Milk,healthy bones
Iron
Liver and cabbage ,makes red blood red cells
Balanced diet
Right amount of nutrients to stay healthy . Must have the 5 major nutrients and water .
Food pyramid
Shows how much to eat of each food
To test for starch
Use iodine bread turns from brown to blue-black
To test for glucose
(Reducing sugar) add Benedictus solution to lucozde or,heat it . Turns from blue to brick red
To test for protein (biuret test )
Add coper sulfate and sodium hydroxide (biuret regent ) to meat. Turns from blue to violet
To test for fat
Put brown onto oil. A translucent dot appers