STRUCTURE OF LIPIDS

Question 1

Unlike polysaccharides and proteins, lipids are
not polymers—they lack a _________.

Answer 1

repeating monomeric unit

Question 2

Lipids are made from two molecules: ______ and _________

Answer 2

a. Glycerol
b. Fatty Acids

Question 3

A ___________ is made up of three carbon atoms with a hydroxyl group attached to it and hydrogen atoms occupying the remaining
positions.

Answer 3

glycerol molecule

Question 4

Fatty acids consist of ____________ and a ____________.

Answer 4

a. an acid group at one end
of the molecule
b. hydrocarbon chain,
which is usually denoted by the letter ‘R’

Question 5

A fatty acid is _______ if every possible bond is made with a Hydrogen atom, such that there exist no C=C bonds.

Answer 5

saturated

Question 6

__________ fatty acids do
contain C=C bonds.

Answer 6

unsaturated

Question 7

are lipids consisting of one
glycerol molecule bonded with three fatty acid
molecules.

Answer 7

Triglycerides

Question 8

The bonds between the molecules of triglycerides are
covalent and are called ________ ?

Answer 8

ether bonds

Question 9

Triglycerides are formed during a ______ __________?

Answer 9

condensation reaction

Question 10

The charges are evenly distributed around the
molecule so hydrogen bonds to not form with water molecules making them _________________.

Answer 10

insoluble in water