Long term energy storage Lipids Long term energy storage

What elements are Lipids composed of? Carbon (C) and Hydrogen (H) Oxygen (O) Lots of Hydrogen!!!!!

Important Lipid Facts Lipids are Fats, Oils and Waxes Lipids do not dissolve in water

Lipids usually serve one of three functions: Important Lipid Facts Lipids usually serve one of three functions: 1. Energy storage When carbs have been used up we use fatty acids for energy.

Lipids usually serve one of three functions: Important Lipid Facts Lipids usually serve one of three functions: 2. Structural support in cell membranes (phospholipids)

3. Serve as messengers Important Lipid Facts Lipids usually serve one of three functions: 3. Serve as messengers Steroids are lipids that carry messages through the bloodstream.

Lipids do not have true monomers Lipid Monomers? Lipids do not have true monomers Fatty acids are the building blocks that make up most lipids. Fatty acids are classified as: 1. Saturated OR 2. Unsaturated.

Lipid Monomers? How do you tell the difference? Saturated fatty acids have NO DOUBLE BONDS!! They have the maximum number of bonds possible, they are full (of hydrogen). usually solid at room temperature, and most come from animal products. Can you think of some examples?

Lipid Monomers? How do you tell the difference? Unsaturated fatty acids have double bond(s) in the carbon chain and are not full. Most unsaturated fats are liquid at room temperature, and are usually referred to as oils. Can you think of some examples?

Lipid Polymers A common lipid that contains fatty acids is a Triglyceride. They are composed of Glycerol linked to three fatty acids (in the shape of an “E”) by condensation reaction.

Lipid Polymers Draw a Triglyceride. Glycerol 3 Fatty Acids