Biomolecules and Nutrition ( Lipids, Fats, Oils )

What are elements of lipids?

Glycerol+3 fatty acids

Temperatures of lipids

Fat- solid at room temperature Oil- liquid at room temperature

Sources of lipids

Meat, milk, butter, cheese, olives, maize, sunflower seeds

Phospholipid ( cell membrane )

PO4-glycerol-fatty acid(2)

Roles of lipids ( STRUCTURAL )

Phospholipid forms plasmalemma, insulates organs, cuticle of leaves

Roles of lipids ( METABOLIC )

Storage of excessive carbohydrate, energy source, hormones, stores fat soluble vitamins

Other roles of lipids

Energy store, insulation, protection, waterproofing

Test for lipids

Rub fat/oil onto brown paper, leave for a period, fat leaves a permanent translucent stain