40) Because of the Sarbanes-Oxley Act, accountants must maintain financial documents and audit (1.8pts) work for...

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40) Because of the Sarbanes-Oxley Act, accountants must maintain financial documents and audit (1.8pts) work for six months. Done year. Ofive years. O ten years. 1. Draw the structure of Leucine? Explain why Leucine is considered as a hydrophobic amino acid? 2. Draw the structure of Lysine? Explain why Lysine is considered as a basic amino acid? 3. Rank the amino acids used in the chromatography experiment in part 2 (Glycine(Gly), Tryptophan(Trp) and Tyrosine (Tyr)) in order of increasing solubility in water. Which amino acids is least soluble in water? Why? Which are most soluble in water? Why? 4. Rank your Rf results from each amino acid in part 2 from lowest to highest Rf. Which amino acids tested traveled the farthest? Which traveled the least? 5. The developing solvent in part 2 is 0.5 M Ammonium hydroxide (base) 10 mL and 20 mL of isopropyl alcohol. Draw the structure of isopropyl alcohol. Which amino acids would you predict are most soluble in this solution? Does this agree with your Rf results? Explain. 6. A student calculates the following Rf values from part 2 of the laboratory experiment: Gly 0.4, Trp 0.7, and Try 0.65 with unknown 0.7. Can the student determine the unknown identity? Explain. 7. Another student obtains the same Rf values as #6 but 2 spots for unknown 0.7 and 0.65. Can he determine the identity of the unknown mixture? What might have gone wrong during the procedure to cause 2 spots? 8. A student concludes that the unknown is a pure sample because she obtains 1 spot for that lane. Is this assumption valid? Explain. If a component of a given spot is very soluble in the solvent, it will be swept along with or near the solvent front. Conversely, components that are relatively insoluble in the solvent do not move any great distance up the paper 40) Because of the Sarbanes-Oxley Act, accountants must maintain financial documents and audit (1.8pts) work for six months. Done year. Ofive years. O ten years. 1. Draw the structure of Leucine? Explain why Leucine is considered as a hydrophobic amino acid? 2. Draw the structure of Lysine? Explain why Lysine is considered as a basic amino acid? 3. Rank the amino acids used in the chromatography experiment in part 2 (Glycine(Gly), Tryptophan(Trp) and Tyrosine (Tyr)) in order of increasing solubility in water. Which amino acids is least soluble in water? Why? Which are most soluble in water? Why? 4. Rank your Rf results from each amino acid in part 2 from lowest to highest Rf. Which amino acids tested traveled the farthest? Which traveled the least? 5. The developing solvent in part 2 is 0.5 M Ammonium hydroxide (base) 10 mL and 20 mL of isopropyl alcohol. Draw the structure of isopropyl alcohol. Which amino acids would you predict are most soluble in this solution? Does this agree with your Rf results? Explain. 6. A student calculates the following Rf values from part 2 of the laboratory experiment: Gly 0.4, Trp 0.7, and Try 0.65 with unknown 0.7. Can the student determine the unknown identity? Explain. 7. Another student obtains the same Rf values as #6 but 2 spots for unknown 0.7 and 0.65. Can he determine the identity of the unknown mixture? What might have gone wrong during the procedure to cause 2 spots? 8. A student concludes that the unknown is a pure sample because she obtains 1 spot for that lane. Is this assumption valid? Explain. If a component of a given spot is very soluble in the solvent, it will be swept along with or near the solvent front. Conversely, components that are relatively insoluble in the solvent do not move any great distance up the paper

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