Chapter 8 Flashcards
triacylglycerols
storage lipids in animals and plants
-fatty acid esters of glycerol
conjugated double bond
usual; singlesbonds separated by double bond
glycerol
carboxyl group and hydrocarbon chain
The longer the carbon chain…..
the higher the melting point
the more double bonds….
the lower the melting point
saturated fatty acid tails pack in compact arrays…..
maximizing van del Waals interactions
double bonds in nature plant oils are usually in…..
cis-configuration
many double bonds in hydrogenated vegetable oil are in…
trans-configuration
trans-fatty acids….
increase level of “bad” cholesterol and decrease “good” cholesterol
less oxygenated fuels ____ more efficiently
burn
triacylglycerols have ___________ than carbs
lower oxygenation state
membrane lipids (polar)
phospholipids and glycolipids
phospholipids
glycerophospholypids and sphingolipids
glycolipids
sphingolipids and galactolipids (sulfolipids)
glycerophospholipids
- glycerol backbone
- 2 fatty acids
- PO4 and alcohol
- most common
sphingosine
- one fatty acid chain from sphingosine backbone molecule
- fatty acid
- PO4 and Choline OR mono or oligosaccharide
galactolipids (sulfolipids)
- glycerol backbone
- 2 fatty acids
- mono/disaccharide and SO4
chloroplast membranes contain…
galactolipids and sulfolipids
membrane lipids need _____________.
a charged or polar headgroup
phosphate is ____________ needed for ________.
limiting nutrient, more critical function
________ bonds are chemically more stable and more resistant to enzymatic digestion
ether
ether bond
2 carbons bonded to oxygen
ester bond
double oxygen bonded to carbon
Sterols have four fused…
carbon rings
