Lipids

What are lipids? Large non polar organic molecules Elements that make up most lipids: – Carbon – Hydrogen – Oxygen Examples: – Phospholipids, steroids, – waxes, pigments, triglycerides

Functions of Lipids Lipids are non-polar molecules that store energy Lipids protect organs Lipids are important parts of cell membranes

Fatty acids are not branched carbon chains that make up most lipids Saturated fatty acids are carbon atoms that covalently bonded to 4 atoms and are primarily solids (butter) Unsaturated fatty acids are not fully bonded and are primarily liquids (veggie oil) Unsaturated fats are the best for you

Fatty Acids!

Triglycerides – A lipid made up of three fatty acid molecule and one glycoside molecules Phospholipids – a lipid that contains phosphorous and that is a structural component in cell membrane Functions – To form a barrier between the inside and outside of the cell Importance Help negotiate what comes in and out

Hydrophobic The end that tends not to interact with water molecules Hydrophilic The end that is polar and attracted to water molecules Relationship They have two rather than three, fatty acids attracted to a molecule of glycerol

What is the function of waxes and steroids in your body?? – Waxes are meant to form protective barriers in the body – Steroids are meant to perform important bodily functions