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AP Biology Name __________________ Unit 3 Biochemistry Date _________________ Build a Monomer Project Almost all molecules made by cells are composed of carbon atoms bonded to one another and to atoms of other elements (especially H, O, N). Compounds made by cells and containing carbon are known as organic compounds. Carbon can form four covalent bonds with other carbons or other types of atoms. Cells make a huge number of large molecules from a small set of small molecules. These smaller molecules are called monomers and are linked together to make larger molecules known as polymers. Four main groups of organic compounds exist --- carbohydrates, lipids, proteins, and nucleic acids. Objective: Each student will construct a monomer of an organic compound found within organisms. You may construct one of the following --- glucose, fructose, galactose, glycine, alanine, saturated fatty acid, unsaturated fatty acid, deoxyribose, ribose, or thymine. 1. Construct a 3-D model that correctly represents your monomer. It can be a space-filling model or a ball & stick model. a. It must be 3-D, durable, light weight, & stand up or hang from something. b. Cannot use edible materials, but you can use common house-hold items such as soft drink bottle caps, beads, styrofoam balls, etc. for the atoms. Color code the atoms as follows: Carbon – black Hydrogen – yellow Oxygen – red Nitrogen – blue c. Bonds between atoms need to properly represented. (single, double bonds, etc) 2. You must make a project key that contains the following: a. Key to all atoms and bonds ( Ex. single tooth pick = hydrogen bond) b. The molecular formula c. The structural formula labeled with important functional groups. d. The polymer/macromolecule that this monomer is a part of. e. Function of that macromolecule & how its structure relates/helps its function. f. One interesting additional fact about the monomer. Grading Monomer: Model Key Points Possible Accuracy of Ball & Stick or Space Filling Model (atom & bond placement) Bonds correctly represented (single & double bonds, etc) Atoms correctly color coded 20 Durability & Portability of the model 7 Creativity in use of materials 5 All Atom & bonds matched with materials in key (single tooth pick = hydrogen bond) Molecular Formula Listed 10 Structural Formula Drawn 10 Functional Groups labeled on Drawing 5 The polymer/macromolecule that this monomer is a part of. 5 Function of that macromolecule & how its structure relates/helps its function. 10 One additional interesting fact about the monomer. 5 Total Points Earned 10 8 5 Points Earned