Day 20 HW Review
1.) What are monomers? Provide at least two
examples from the reading.
Single, small molecules that can assemble
into larger complex molecules.
(Mono = one)
EX: simple sugars, fatty acids, amino
acids, nucleic acids
2.) What is a subunit?
Small part of something larger.
Ex: a single brick is a subunit of a house.
3.) What are polymers?
Molecules made up of many monomers
(Poly = many)
4.) a.) #1 Represents a single:
Monomer
Justify: it is a single
part
4.) b.) #5 Represents a:
Polymer
Justify: it is made up of
many single parts, or
monomers.
5.) Explain what enzymes do
Speed up reactions.
6.) Explain what condensation is
Condensation is a reaction when cells build
large molecules, or polymers, from smaller
molecules, or monomers.
6.) a.) Draw the model from Fig. 3.4 that
represents condensation
6.) b.) What is released when this reaction
occurs?
H2O
6.) c.) Circle this structural formula in the model
you drew for “a” that represents your answer
to “b”.
In condensation,
water is a
PRODCUT
7.) d. How does water form as a product of
condensation? HINT: there’s a functional group
involved!
A HYDROXYL group from one
molecule combines with a
hydrogen atom from the other
molecule.
7.) Explain what hydrolysis is
Hydrolysis is the reverse of condensation. It is a
reaction where a polymer is broken apart into
monomers.
7.) e.) Draw the model from Fig. 3.4 that
represents hydrolysis
7.) f.) What is required for this reaction to
occur?
H2O
7.) g.) Circle this structural formula in the model
you drew for “e” that represents your answer
to “f”.
In hydrolysis,
water is
REQUIRED
7.) h.) What do hydrolysis enzymes do to break the polymer
down into monomers? HINT: there’s a functional group
involved
Break a bond by attaching the
HYDROXYL group (--OH) to
one atom in one monomer
and a hydrogen atom (H) to
an atom in the other
monomer.
The OH and the H come from
water (H2O)