Structure And Function 2 Flashcards
lipids are not true
polymers
Lipids consist mostly of
hydrocarbon regions which form non-polar covalent bonds
most biologically important lipids
fats, phospho lipids, and steroids
Glycerol
three carbon alcohol
hydroxyl group attached to each carbon
why are fats hydrophobic
many nonpolar C-H bonds
fatty acid
carboxyl group, long carbon skeleton - usually 16 or 18 chain
tri glycerol
three fatty acid chains joined to glycerol
call be same 3 fats or dif
fatty acid chain
Varies in length
(and # and location of Double bonds)
if a fatty and has no double covalent bonds
it’s a saturated fat
- solid at room temp
straight chain
(poly-) unsaturated fatty acid
Means they have double cov. bonds
poly- means they have multiple
not solid at room temp
has a Link wherever the cis - double bond is
most animal fats
are saturated & solid @ room temp
Plant and fish fats
liquid - Unsaturated- oils
omega-3
necessary for life
added by diet - harmons can’t synthesise
major function of fats
energy storage - store twice as much energy as poly saccharides
Why can’t lipids be considered polymers
not made up of monomer units
