Fats

Question 1

Saturated fatty acids

Answer 1

All carbon atoms within the hydrocarbon chain carry the maximum number of hydrogen atoms. These carbon atoms are connected to each other through single bonds

Question 2

Unsaturated fatty acids

Answer 2

Have 1 or more double bonds within the hydrocarbon chain.
Monounsaturated has 1 double bond (Eg; olive oil)
Polyunsaturated has 2 or more double bonds (Eg; soya bean oil)

Question 3

Trans fat

Answer 3

Trans fat is produced during hydrogenation. It is a process in which liquid oils are converted to solid fats
Eg; chicken nuggets

Question 4

Food sources of fat

Answer 4

• almond (nuts&seeds)
• sunflower oil (fats&oils)
• coconut flesh (fruit)
• bacon (meat)
• full cream milk (dairy)
• butter (fats & oils)

Question 5

Functions of fats in the body

Answer 5

• rich source of energy
• storage of fat-soluble vitamins
• insulation
• protection of vital organs

Question 6

Rich source of energy (fats)

Answer 6

Excess energy derived from food is stored in the form of body fat.
When there is a low dietary energy intake, the body uses the stored fat for energy

Question 7

Storage for fat-soluble vitamins

Answer 7

Fats in the body dissolve & store fat soluble vitamins, thus improving the absorption & use of these vitamins.

Question 8

Insulation (fats)

Answer 8

The layer of fat under the skin reduces heat loss from the body, thus insulating the body against the cold

Question 9

Protection of vital organs (fats)

Answer 9

Vital organs in the body are protected by fat deposits. These fat deposits protect the body by cushioning the vital organs against impact & damaging blows