Hydrogen Peroxide Catalase Enzyme Oxygen Water Catalase Enzyme

When Bonds are made… Energy is STORED when strong bonds are made. Energy is RELEASED when weaker bonds are broken. **Be aware that this is a really simplified explanation that doesn’t do justice to the thermodynamics of chemical reactions.

Think about the possible meaning of following prefixes & suffixes with your table partner… (If you’re “all thought out” & have no idea, then go to your prefixes & suffixes sheet for help.)

Hydro-

Dehydrate-

-lysis

-tion

-synthesis

Hydro-water Dehydra-removing water -lysis-to break apart ‘slice’ -tion-process synthesis-putting together

Put the parts together. What does the word “Hydrolysis” mean?

Hydrolysis is… A chemical reaction in which a chemical compound is broken down with water.

Put the parts together. What does “Dehydration Synthesis” mean?

Dehydration Synthesis is… A chemical reaction in which 2 substances are joined and a water molecule is lost.

OH Glucose Monomer (C 6 H 12 O 6 ) OH Glucose Monomer (C 6 H 12 O 6 ) Demo #1: Hydrolysis or Dehydration Synthesis?

OH Glucose (C 6 H 12 O 6 ) H OOH Glucose (C 6 H 12 O 6 ) Demo #1: Hydrolysis or Dehydration Synthesis? An enzyme removes water. H2OH2O

OH O We now have a polymer also called a macromolecule. OH Demo #1: Hydrolysis or Dehydration Synthesis?

OH O Now, we start with a polymer… OH Demo #2: Hydrolysis or Dehydration Synthesis?

OH O Demo #2: Hydrolysis or Dehydration Synthesis? and add water to get … An enzyme adds water.

OH glucose monomers. (C 6 H 12 O 6 ) OH Demo #1: Hydrolysis or Dehydration Synthesis?

CASE # 1

CASE STUDY # 1 Lactose—type of sugar (C 12 H 22 O 11) Breakdown of this type of sugar requires an enzyme called Lactase We have to break it down so our cells can use the sugar The chemical reaction is as follows… C 12 H 22 O 11 + H 2 O  C 6 H 12 O 6 + C 6 H 12 O 6 An anonymous individual cannot seem to digest milk (lactose)… this person would be called “________ _________” What do you think this person might be lacking? Is the normal breakdown of lactose by lactase and example of hydrolysis or dehydration synthesis? What makes you say that?

CASE # 2

CASE STUDY # 1 Sucrose—a type of sugar Sucrose is the ‘white’ sugar that we use… Many forms of sugar are liquid… table sugar is a solid The chemical reaction is as follows… C 6 H 12 O 6 + C 6 H 12 O 6  C 12 H 22 O 11 + H 2 O Is the formation of sucrose by combining 2 C 6 H 12 O 6 molecules and removing a water molecule an example of hydrolysis or dehydration synthesis? What makes you say that?