Bio 181 Quiz 1 Grand Canyon University Study Guide Graded A+

Chemical Equilibrium {Ans: The point at which the reactions offset one another exactly. Dynamic equilibrium; reactions are still going on, but with no net effect on the concentrations of reactants and products.}Disulfide Bridges {Ans: Further reinforce the shape of a protein. Form where two cysteine monomers, which have sulfhydryl groups (-SH) on their side chains, are brought close together by the folding of the protein.}Polar Covalent Bond {Ans: When an atom is bonded to a more electronegative atom, the electrons of the bond are not shared equally. (H2O).}Glycosidic Linkage {Ans: A covalent bond formed between two monosaccharides by a dehydration reaction.}Hydroxyl Group {Ans: (-OH) Polar due to electronegative oxygen. Forms hydrogen bonds with water, helping dissolve compounds such as sugars. Compound name: Alcohol Example: Ethanol}B pleated sheet {Ans: Connected by hydrogen bonds between parts of the two parallel segments of the polypeptide backbone.}