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AQA Specimen Paper 2 Q6
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![15 The tripeptide shown in Figure 4 is formed from the amino acids glycine, threonine and lysine. Figure 4 CH3 CHOH NH2 (CH2)4 COOH H2N glycine threonine lysine . 1 0 6 Draw a separate circle around each of the asymmetric carbon atoms in the tripeptide in Figure 4. [1 mark] . 2 Draw the zwitterion of glycine. 0 6 [1 mark] . 3 0 6 Draw the structure of the species formed when glycine reacts with an excess of bromomethane. [1 mark] 0 6 . 4 Deduce the IUPAC name of threonine. [1 mark] . 5 0 6 Draw the structure of the species formed by lysine at low pH. [1 mark] Barcode Typesetter code Turn over <br />](https://learnah.org/wp-content/uploads/2018/08/Specimen_QP_-_Paper_2_AQA_Chemistry_A-Level_6.jpg)
