lipids Flashcards
what is the structure of glycerol
H
I
HO—-C—H
I
H
what is the structure of a fatty acid
O
II
R—-C—OH
is this saturated or unsaturated and why?
O H H H
\ I I I
C-C-C-C-H
/ I I I
H-O H H H
saturated because it doesn’t have a double bond
how do you know when a molecules is unsaturated
when it has a double bond
C=C
what is the structural difference between triglycerides and phospholipids
a triglycerides
is 1 glycerol joined to 3 fatty acids
a phospholipid is 1 glycerol joined to 2 fatty acids and one phosphate group
what charge does the phosphate have
negative
are triglycerides hydrophilic or hydrophobic
hydrophobic because they repel water
are phospholipids hydrophilic or hydrophobic
hydrophilic because they are attracted to water
what is the bond called when triglycerides and phospholipids bind together
ester bond
<img></img>
what does it mean if something is polar or non polar
polar means having attraction to something
non polar means not having attraction to something
are a triglycerides polar or non polar to water
non polar and it is therefore waterproof. example; equatic ducks
are phospholipids polar or non polar
polar because they are attracted to water.
what are triglycerides used for
storage insulation and protection
what are phospholipids used for
they make lipid bilayers to act as a barrier
