14·The glycosidic bond is an example of which functional group? a. ether b. ester c. amide d. carboxy e. alcohol 15. Which molecule generally has the best solubility? a. carbohydrate d. nucleic acid b. lipid e. hormones c. protein 16. Which biomolecule provides the lowest energy per unit? c. protein a. lipidb. carbohydrate d. DNA e. RNA 17. Identify which of the following is not an example of secondary structure of proteins: b. parallel beta sheet e. beta turn c. antiparallel beta sheet a. hydrophobic core d. alpha helix 18. Which structure contains a glycosidic bond? H,C 0 HC- 0 H2OH 0 H2OH N-CH2C-N-CH-COH OH HO H2C 19. When the amino acids R and and D are found in close proximity to each other on protein, what type of interaction is possible? a. electrostatic d. convalent polar b. disulfide bond c. hydrophobic interaction e. covalent nonpol