3.2.1.2 Fats Flashcards
The structure of fat is known as a _____________.
Triglyceride.
What is the difference between a fat an an oil?
A fat is solid at room temperature.
An oil is liquid at room temperature.
State two functions of fat in the body.
Source of energy (35%)
Helps insulate the body
Protects bones and kidneys from damage by providing a protective fatty layer over them.
Source of fat-soluble vitamins (A,D,E & K).
Which vitamins are fat-soluble vitamins?
Vitamins A,D,E & K
What is meant by visible fat?
Fat that can be clearly seen in food.
What is meant by invisible fat?
Fat that is not clearly seen in food.
What is an effect of an excess of fat in the body?
Weight gain - this can lead to obesity (this will only occur if we do not burn off excess calories).
If too much saturated fat is consumed, this can lead to coronary heart disease (CHD).
State two sources of saturated fat.
Butter Lard Suet Vegetable oil Ghee Fat in meat Palm oil
State some sources of unsaturated fat.
Olive oil Rapeseed oil Sunflower oil Oily fish Avocadoes Nuts Seeds
Describe the chemical structure of fat.
One unit of glycerol. 3 units of fatty acids.
State the effects of a deficiency of fat in the body.
If carbohydrate consumption is reduced as well as fat, weight loss will occur.
What is cholesterol?
A fatty substance found in the blood; it is essential for humans but can be harmful.
How much energy should we get form fat?
No more than 35% of food energy should come from fat.
Name three sources of animal fat.
Butter, ghee, lard, meat, meat products, oily fish, full-fat yoghurt, eggs, chocolate, pastries, biscuits cake…
Name three sources of vegetable fat.
Vegetable and plant oils, avocados, olives, nuts, nut products, seeds, fat spreads…
