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Unformatted text preview: protein. 11. Which of the following statements about an enzyme is FALSE? a. An enzyme is usually a large protein. b. An enzyme is a catalyst for biological reactions. c. An enzyme is a chiral molecule. d. An enzyme changes the equilibrium constant of a reaction. 12. Which of the following statements about the arrangement of a protein in three dimensions is FALSE? a. As a result of hydrogen bonding, a portion of a protein may exist as a right-handed -helix with 3.6 amino acid residues per turn, and a repeat unit of 5.4 . b. As a result of hydrogen bonding a portion of a protein may exist as a pleated sheet, in which the repeat unit is 7.0 . c. In a pleated sheet, the polyamide chains may be parallel or antiparallel. d. A portion of a protein may exist as a flat sheet with a repeat unit of 7.2 ....
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- Fall '01
- Organic chemistry