WARM UP Make sure your notebook is put together and everything is up to date and glued in. NO loose papers allowed. Notebook test today!

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Presentation transcript:

WARM UP Make sure your notebook is put together and everything is up to date and glued in. NO loose papers allowed. Notebook test today!

LIPIDS SET UP CORNELL NOTES!

EXAMPLES Fats Oils Steroids Waxes Vitamins

WHAT’S A LIPID? Non-polar (no charge) organic molecules Does not mix with water Hydrophobic= water fearing Made of C,H,O

FUNCTIONS Biological membranes Store long term energy Insulation Waterproofing

WHERE ARE THEY MADE? Lipids are made in the smooth endoplasmic reticulum

FATTY ACIDS Saturated fatty acid- single bonds, straight chains. Solid. (bad for us!) Unsaturated fatty acid- double bonds- crooked (not straight). Liquids. (ex. Oil)

BRAIN BREAK! Stand up and tell your partner what you did this weekend!

ENERGY CONTENT BiomoleculeEnergy content Carbohydrates4 cal/g Proteins4 cal/g Lipids9 cal/9 Many bonds= a lot of energy !

TYPES OF LIPIDS 1. Triglycerides 2. Phospholipids 3. Steroids

1. TRIGYLCERIDE Made of one glycerol head and 3 fatty acids Looks like the letter E Used for energy

2. PHOSPHOLIPIDS One phosphate group and 2 fatty acid chains Makes phospholipid bilayer (cell membrane)

3. STEROIDS No fatty acid chains Has 4 carbon rings Makes up some hormones and vitamins (testosterone, estrogen) Acts as chemical messengers

IN GENERAL… Lipids are long chains of carbon and hydrogen: But sometimes they look like this:

CORNELL NOTES Write 3 good study questions and a summary of lipids.