Chapter 18 Lipids. 18.1 Lipids 18.2 Fatty Acids. Lipids. Lipids are: Biomolecules that contain fatty acids or a steroid nucleus. Soluble in organic solvents, but not in water. Named for the Greek word lipos , which means “fat.” Extracted from cells using organic solvents.
18.2 Fatty Acids
Fatty acids are:
Saturated fatty acids have single C–C bonds.
Saturated fatty acids have:
Unsaturated fatty acids have cis C=C bonds.
Unsaturated fatty acids:
Vegetable oils contain more unsaturated fatty acids, which makes their melting points lower.
The first double bond: