LIPIDS

There are three types of lipids: fatty acids, triglycerides and phospholipids.

1. Fatty acids - Long carbon chains (C-C-C-C-C-C-C-C-C-C-C-C-C).

• They come in many different lengths, get many different fatty acids.
• They are non-polar, so they clump together in water (oil and water don't mix.)

2. Triglyceride

• Three fatty acids linked by glycerol.

3. Phospholipid - Remove one fatty acid fromTriglyceride and add a Phosphorous
instead.

• Phospholipids organize themselves in water in unique ways.
• They are partly non-polar (long tails) and partly polar (the phosphorous end.)

• Because of this they organize together in unique ways - they form a Bilayer or a Micelle (round ball.)

Phospholipids are used to construct cell membranes