Lecture Six

Lecture Six - Lecture Six 9/8/10 Read pgs. 142-161! Lipids-...

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Lecture Six 9/8/10 Read pgs. 142-161! Lipids- lipids are insoluble in water. They are non-polar compounds. Ex: C8 H16 O2 (lots of carbon and hydrogen, but not that much oxygen = a non-polar bond) Saturated- saturated with hydrogen. Solid at room temperature. (butter) Unsaturated- less hydrogen than it can hold (carbon-carbon double bonds). Oils (olive oils, vegetable oils) in order to make it saturated again or a solid, you must rehydrogenate it! It is harder to digest a carbon-carbon bond so it is healthier—your body wants to get rid of it! CIS- big bend in the bond TRANS- little tiny bend in the bond Types- Fatty acids - hydrocarbon chain with a carboxyl group on one end. Triglycerides (fats) - a glycerol molecule with 3 fatty acid chains attached. Fat that is stored in your body is in this form. Phospholipids - a glycerol molecule with 2 fatty acid chains and a phosphate group attached. Have a very unusual set of properties. The fatty acid chains are non-polar or hydrophobic. The phosphate groups are polar, so half the
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Lecture Six - Lecture Six 9/8/10 Read pgs. 142-161! Lipids-...

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