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Download Worksheet 1 - Ch. 2, 3 - Iowa State University
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Leader: Course: Instructor: Date: Chapters 2 & 3 Supplemental Instruction Iowa State University Nur Biol 212 Kukday Jan 20, 2016 Ch. 2 The Chemical Basis of Life Define: Buffer Amphipathic Electronegativity Solute Adhesion Ionic Bond Proton Micelles Hydrophilic Surface Tension Covalent Bond Electron Neutrons Hydrophobic Acid Nonpolar Bond Valence Electrons Solvent Hydrogen Bond Base Polar Bond Solution Cohesion pH 1. Identify a polar bond to a carbon, and a nonpolar bond to a carbon in the arginine molecule below. 2. What kind of bonds does water have? Why? (Hint: somehow relate it to electronegativity.) 3. How is pH level determined? Relate [H+] to pH level. 4. Acid vs. Base Acids increase/decrease the ____ concentration; bases increase/decrease the ____ concentration in solution. Bases either bind ___ or release ____ to increase pH. Ch. 3 Protein Structure and Function Define: Monomer Peptide Bond Polypeptide Polymer Amino Acids Polypeptide Protein Side Chain Amino Condensation Reaction Dehydration Reaction N/C Terminal Hydrolysis Polymerization Carboxyl 1. Determine the functional groups in this amino acid (amino, carboxyl, side chain). Is this amino acid acidic/basic/uncharged polar/nonpolar? How do you know? 2. Protein Bonding a. _____________ reactions form polymers from monomers, which release water to form a __________ bond in proteins. The reverse reaction called _____________ breaks polymers apart by adding water. b. Peptide bonds form between __________ and ___________ functional groups. 3. This is an image of an aquaporin protein; it lets water into the cell through a tunnel. a. What structure does it have? b. Determine whether polar and nonpolar amino acids would be located on the inside or outer layer of the structure.
