lipids
diverse group of organic molecules that are insoluble in water, but will dissolve in nonpolar solvents
lipids
fats and oils, phospholipids, waxes, steroids
fats and oils
used for long term energy storage
fats and oils
structure is called a triglycerol
fats and oils
have a carboxyl group at one end of a hydrocarbon chain
fats and oils
insoluable in water because of the long nonpolar carbon chain
fats and oils
used for long term energy storage
fats and oils
used to cushion vital organs
fats and oils
insulates against heat loss
saturated fat
no double bonds between carbons in the fatty acid tail
saturated fat
saturated with hydrogen
saturated fat
usually solid at room temperature
saturated fat
examples: bacon grease, lard, and butter
unsaturated fat
one or more double bonds between carbons in the fatty acid tail
unsaturated fat
tail kinks at each double bond, so molecules do not pack closely enough together to be a solid
unsaturated fat
usually liquid at room temperature
unsaturated fat
example: vegetable oils
phospholipids
glycerol + 2 fatty acids + 1 phosphate group at the end
phospholipids
phosphate is highly negatively charged, making one end polar
phospholipids
the other end is nonpolar
phospholipids
used in cell membranes
steroids
4 fused carbon rings with various functional groups
steroids
estrogen, testerone, cholesterol etc