- Created by: Lucybarrow444
- Created on: 19-11-18 21:07
- triglycerides and phospholipids are two groups of lipid.
- Triglycerides are formed by the condensation of one molecule of glycerol and three molecules of fatty acid. (https://goo.gl/images/NKcT6P)
- a condensation reaction between glycerol and a fatty acid (ROOH) forms and ester bond.
- the R-group of a fatty acid my be saturated (only single carbon bonds ) or unsaturated (at least one double carbon bond)
- In phospholipids, one of the fatty acids of a triglyceride is substituted by a phosphate-containing group. (https://goo.gl/images/0W4rhP)
- the presence of the phosphate group means that the ‘head’ is attracted to water (hydrophilic).
- the hydrocarbon tails do not mix with water (hydrophobic)
- when mixed with water they arrange themselves in a double layer with their hydrophobic tails pointing inwards and their…