Lipids: Fats, Oils & Waxes• Large and varied group

• Made up of mostly __ & __atoms (O too!)

• Do not dissolve in water• Uses:

Triglycerides• function to cushion organs, as insulation & in long-term energy storage

• Made of two kinds of molecules– _____________– _____________

• Saturated Fatty Acid:– Carbons joined by ______ bonds

– Maximum _________ atoms

• Unsaturated Fatty Acid: – At least one ___________ bond between ________ in the fatty acid

Fatty AcidsFatty acids with only single covalent bonds between the carbon atoms are referred to as ___________.

Fatty acids that contain 1 or more double bonds between carbon atoms are said to be ___________.

What are Trans fats?

Source: http://biology.clc.uc.edu/Courses/bio104/lipids.htm

Phospholipids• Building block of _______ _______– Only has 2 _____________– 1 ____________ group

• Have – Hydrophilic heads– Hydrophobic tails

Steroids• Carbon Skeleton has:

– Four interconnected rings– Different groupings of atoms (or functional groups) attached

• Cholesterol• Hormones