Building Carbohydrates Build a Molecule With your group

Building Carbohydrates

Build a Molecule With your group, build a molecule of glucose using the molecular model kit. Key Hydrogen: white Oxygen: red Carbon: black

Question #1 Observe your glucose molecule. How many of each atom is present in 1 molecule of glucose? Carbon: 6 Hydrogen: 12 Oxygen: 6

Question #2 Multiple these numbers by 2 to find the total number of atoms in 2 glucose molecules. 48

Question #3 Remove the hydroxide (OH) from one glucose molecule, and the hydrogen from the carboxyl group (C=O) end of the other glucose. Attach these 2 molecules together. disaccharide You just formed a What was left was a molecule of Water Was any matter lost/destroyed? No!

Question #4 This process is called Dehydration synthesis because water is released as a macromolecule is built/synthesized.

Question #5 Now take the water molecule apart and put the atoms back where they were before. This broke the 2 glucose molecules apart and they have become a monosaccharide again.

Question #6 This process is called hydrolysis because water was used to break a bond and break a polymer into its monomers.

Question #7 Carbohydrates are used for energy and storage.

Question #8 cellulose is a type of carbohydrate used for strengthening cell walls of plants.

Question #9 starch is a type of carbohydrate used in both plants and animals for energy storage.

Question #10 glycogen is a type of carbohydrate used in the human liver for energy storage.