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9/8 Cell Biology
Lecture: Lipids USDFall2018 Dr. Karen Koster
| Question | Answer |
|---|---|
| What is the structural function of lipids? | cellular membranes |
| What are some structural lipids? | diacyglycerols, sphingolipids, sterols |
| What is the storage function of lipids? | energy storage |
| What are some storate lipids? | triacylglcerols: fats, oils |
| What is the polar nature of structural lipids? | amphipathic |
| What is the polar nature of storage lipids? | non-polar |
| What's the difference between saurated fats and unsaturated fats? | saturated fats have just hydrogens and single bonds between the carbons, while unsaturated fatty acids will have double bonds |
| How do you determine the structure of a fatty acid? | A fatty acid will have a carboxylic acid on one end and be a straight chain of carbon with no branching |
| How do you tell structurally that something is an omega 3 or omega 6? | It is a long-chain fatty acid and the double bond will be on the 3rd carbon for the omega 3 and 6th carbon for omega 6 |
| What is the function of omega fatty acids? | signaling molecules involved in inflammatory and immune response |
| What is the structure of a glycerolipid? | glycerol (3 carbon sugar alcohol) with 1,2,or 3 fatty acid chains |
| What is the structure of a sphingolipid? | serine (remember it's an amino acid) with 1 or 2 fatty acid chans |
| What is the structure of an isoprenoid? | sterol and long chain isoprenoid |
| How do you tell it's an iosprenoid lipid? | it will have branching off of the carbon cahin and many double bonds |
| What is the difference between sterol and steroid? | sterol will have a hydroxyl group on the steroid |