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:

MonomerJustify: 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)