Biological Molecules - Food Groups And Functions

Question 1

Lipids (fats and oils)

Answer 1

Used as long-term energy store.

Also have a role in protection and insulation

Question 2

Carbohydrates

Answer 2

Made from single sugars or chains of sugars. They are used in respiration to provide energy.

Question 3

Proteins

Answer 3

Broken down into amino acids, which our body absorbs and assembles into new proteins. The proteins are used for growth and repair.

Question 4

Fibre

Answer 4

Regulates bowel movement. Sloughs off old lining of intestine.

Question 5

Water

Answer 5

Essential as a solvent for chemical reactions (e.g cytoplasm), heat loss (e.g transpiration), transport (e.g blood) e.t.c

Question 6

Vitamins and Minerals

Answer 6

Essential for the normal function of some enzymes and proteins e.g Fe2+ is an essential part of Haemoglobin and Mg2+ is part of Chlorophyll