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.
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