Lipids Flashcards
Lipids are insoluble in
Water
Lipids are soluble in
Nonpolar organic solvents
Head group of lipds are attached by a
phosphodiester linkage
Saturated fat
no double bond, less fluid
Glycerophospholipid
Glycerophospholipid
Waxes
long chain fatty acids esterified to long-chain alcohols
Steroid hormones have high affinity receptors and work
at low concentrations, affect gene expression and metabolism
Cholesterol
steroid important for maintaining membrane fluidity and stability
Prostaglandins
autocrine and paracrine signaling molecules that regulate cAMP levels
Prostaglandins affect
smooth muscle contraction, body temp, sleep-wake cucles, fever, and pain
Triacylglycerols/triglycerides
energy storage for long term use
Fatty acids vary within
triacylglycerol
Carbon atoms in lipids are more
reduced than carboydrates
Because carbon atoms in lipids are more reduced than in carbohydrates they
they give twice as much energy per gram during oxidation
Triacyglycerols are very
hydrophobic
