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9/8 Cell Biology

Lecture: Lipids USDFall2018 Dr. Karen Koster

QuestionAnswer
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
Created by: kenzigustafson