Test Flashcards
Composition of fats
Fats are made up of one glycerol and three fatty acids which is in the shape of an E.
Elemental composition of fats
Fats contain the elements carbon,hydrogen and oxygen.
Sources of fats
Functions of fats
Classification of fats
Saturated fats come mainly from animal sources.
Unsaturated fats come from plant and marine (fish) sources.
Digestive system
The fatty acids are separated from the glycerol during digestion.
Sources of saturated fats
Butter,meat,milk and cream,cheese and eggs
Functions of fats
Fat contains the elements a,d,e and k because the vitamins dissolve in fat
Fats protect delicate organs such as kidneys and nerves.
Fat provided heat and energy.
Sources of unsaturated fats
Sunflower oil,olive oil,nuts,seeds,fish oils and oily fish.
Composition of carbohydrates
Carbohydrates are made up of simple sugars for example glucose which are joined together to form starch.
Elemental composition of carbohydrates
Carbohydrates contain the elements carbon,hydrogen and oxygen.
During digestion the simple sugars are separated.
Classification of carbohydrates
Carbohydrates are divided into three groups.
Sugars, starches and dietary fibre.
Functions of carbohydrates
Sugars and starchy foods provide heat and energy.
Fibre helps the movement of food through the body.
Fibre gives a feeling of fullness.
Sources of sugars
Fruit,milk,soft drinks,jam,honey,ice-cream and sugar.
Sources of starches
Cereals,potatoes,root vegetables,pulse vegetables
Sources of dietary fibre
Vegetables,fruit,brown rice,brown bread
