1. How Compounds Are Built And Broken Down
Dehydration Synthesis
and
Hydrolysis

2. Chemical Reactions are represented by chemical equations
Chemical Reactions are represented by chemical equations. They are written in the following form:
Reactants Products
(starting material) (newly formed substances)
ex: NaCl Na+ + Cl-
Yields
H2O

3. Types of Chemical Reactions:
Building molecules
Dehydration Synthesis
Breaking Down molecules
Hydrolysis + +

4. Dehydration Synthesis
an organic compound (polymer) is made from smaller molecules (monomers) by removing water
Monomer Monomer Polymer
dehydration = removing water
synthesis = making a large molecule

5. Dehydration Synthesis
dehydration = removing water synthesis = to build
synthesis of polymer

6. Hydrolysis
an organic compound (polymer) is broken down into smaller molecules (monomers) by the addition of water
Polymer Monomer Monomer
water
hydro = addition of water
lysis = to break down

7. hydro = water lysis = to break down
Hydrolysis
hydro = water lysis = to break down

8. Dehydration Hydrolysis Synthesis
Removal of Water Addition of Water
Dehydration Hydrolysis
Synthesis
(To break
down)
(To make)

9. Dehydration Synthesis or Hydrolysis? What type of biomolecule?
Dehy.
Synth. +
Carb.
Dehy.
Synth.
Protein
Hydro.
Protein

10.
Hydro.
Protein
Dehy.
Synth.
Carb.
Dehy.
Synth. +
Lipid + + +

11.
Hydro.
Protein
Dehy.
Synth.
Protein + + +
Hydro.
Protein

12. Joining monomers to form polymers is done through a chemical reaction known as Dehydration Synthesis.
monomer + monomer + monomer + monomer + monomer + monomer polymer + 5H2O

13. Breaking down polymers into their individual monomers is done through a chemical reaction known as Hydrolysis. polymer + 5H2O monomer + monomer + monomer + monomer + monomer + monomer

14. Dehydration Synthesis vs. Hydrolysis
water in
water out