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The amino acids tyrosine, lysine and glycine are constituents of many proteins. HN CH COH CH₂ =0 H₂N-CH-C-OH OH tyrosine (CH₂) NH2 lysine H₂N CH-C-OH H glycine (a) State the reagents and conditions you could use to break proteins down into amino acids. (b) Draw a ring around each chiral centre in the above molecules. [2] [1] (c) In aqueous solution amino acids exist as zwitterions. Draw the zwitterionic structure of glycine. .[1] (d) For each of the following reactions, draw the structure of the organic compound formed. (i) glycine + excess NaOH(aq) (ii) tyrosine + excess NaOH(aq)

The amino acids tyrosine, lysine and glycine are constituents of many proteins. HN CH COH CH₂ =0 H₂N-CH-C-OH OH tyrosine (CH₂) NH2 lysine H₂N CH-C-OH H glycine (a) State the reagents and conditions you could use to break proteins down into amino acids. (b) Draw a ring around each chiral centre in the above molecules. [2] [1] (c) In aqueous solution amino acids exist as zwitterions. Draw the zwitterionic structure of glycine. .[1] (d) For each of the following reactions, draw the structure of the organic compound formed. (i) glycine + excess NaOH(aq) (ii) tyrosine + excess NaOH(aq)

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The amino acids tyrosine, lysine and glycine are constituents of many proteins. HN CH COH CH₂ =0 H₂N-CH-C-OH OH tyrosine (CH₂) NH2 lysine H₂N CH-C-OH H glycine (a) State the reagents and conditions you could use to break proteins down into amino acids. (b) Draw a ring around each chiral centre in the above molecules. [2] [1] (c) In aqueous solution amino acids exist as zwitterions. Draw the zwitterionic structure of glycine. .[1] (d) For each of the following reactions, draw the structure of the organic compound formed. (i) glycine + excess NaOH(aq) (ii) tyrosine + excess NaOH(aq)
Transcribed Image Text:The amino acids tyrosine, lysine and glycine are constituents of many proteins. HN CH COH CH₂ =0 H₂N-CH-C-OH OH tyrosine (CH₂) NH2 lysine H₂N CH-C-OH H glycine (a) State the reagents and conditions you could use to break proteins down into amino acids. (b) Draw a ring around each chiral centre in the above molecules. [2] [1] (c) In aqueous solution amino acids exist as zwitterions. Draw the zwitterionic structure of glycine. .[1] (d) For each of the following reactions, draw the structure of the organic compound formed. (i) glycine + excess NaOH(aq) (ii) tyrosine + excess NaOH(aq)
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