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Th01L03 Lipids
Description
Medicine Y1 (Theme 1 | Cells and organelles) Mind Map on Th01L03 Lipids, created by Emma Allde on 15/08/2016.
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medicine y1
theme 1 | cells and organelles
Mind Map by
Emma Allde
, updated more than 1 year ago
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Emma Allde
over 8 years ago
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Resource summary
Th01L03 Lipids
Properties
Glycerol backbone and fatty acid
Fused via dehydration synthesis
Ester bond
Called a triglyceride
Hydrophobic
Insoluble in water
Soluble in oil and inorganic solvents
Fatty acid
A long hydrocarbon chain
Ampiphatic
hydrophobic and hydrophilic regions
Hydrocarbon tail
Carboxylic head
Metabolised via beta-oxidation pathway to generate ATP
Types
Saturated
Found in meat and dairy products
Three straight fatty acid chains
Contains the maximum number of hydrogens based on carbons
No double bounds between its carbon atoms
Examples: Palmitic acid C16:0 • Stearic acid C18:0
Unsaturated
Found in plant oils
Maybe mono- or polyunsaturated
Contains one or more double bonds between its carbon atoms resulting in non- straight fatty acids
Examples • Oleic acid C18:1 • Lionleic acid 18:2
Biological functions
Long-term storage
Adipose tissue
Fatty acid tails can be release and broken down into two-carbon units needed for the TCA cycle
Phospholipids
Glycerol plus 2 fatty acids + phosphate containing group
Example of a glycolipid
Found in membranes forming phospholipid bilayers
Amphipathic
Polar (carboxyl) group, non-polar fatty acid tails
spontaneously form bi-layer in aqueous membrane
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c1150099-7b78-400f-8311-986ae90a2b4c.gif (image/gif)
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