DP Chemistry (last assessment 2024)

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Question 19M.3.sl.TZ1.8a

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Date May 2019 Marks available [Maximum mark: 2] Reference code 19M.3.sl.TZ1.8a
Level sl Paper 3 Time zone TZ1
Command term Draw Question number a Adapted from N/A
a.
[Maximum mark: 2]
19M.3.sl.TZ1.8a

Aspartame is a derivative of a dipeptide formed between two amino acids, phenylalanine (Phe) and aspartic acid (Asp).

(a)

Draw a circle around the functional group formed between the amino acids and state its name.

Name: 

[2]

Markscheme

Name:
amide/amido/carboxamide  [✔]

 

Note: Accept “peptide bond/linkage”.

Examiners report

Many candidates correctly circled the bond between the amino acid residues, though in some cases their circle missed out key atoms. Many correctly identified it as a peptide or amide linkage.

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