STRUCTURE OF LIPIDS Flashcards
Unlike polysaccharides and proteins, lipids are
not polymers—they lack a _________.
repeating monomeric unit
Lipids are made from two molecules: ______ and _________
a. Glycerol
b. Fatty Acids
A ___________ is made up of three carbon atoms with a hydroxyl group attached to it and hydrogen atoms occupying the remaining
positions.
glycerol molecule
Fatty acids consist of ____________ and a ____________.
a. an acid group at one end
of the molecule
b. hydrocarbon chain,
which is usually denoted by the letter ‘R’
A fatty acid is _______ if every possible bond is made with a Hydrogen atom, such that there exist no C=C bonds.
saturated
__________ fatty acids do
contain C=C bonds.
unsaturated
are lipids consisting of one
glycerol molecule bonded with three fatty acid
molecules.
Triglycerides
The bonds between the molecules of triglycerides are
covalent and are called ________ ?
ether bonds
Triglycerides are formed during a ______ __________?
condensation reaction
The charges are evenly distributed around the
molecule so hydrogen bonds to not form with water molecules making them _________________.
insoluble in water