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Question 19N.3.HL.TZ0.19a

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Date November 2019 Marks available [Maximum mark: 1] Reference code 19N.3.HL.TZ0.19a
Level HL Paper 3 Time zone TZ0
Command term Distinguish Question number a Adapted from N/A
a.
[Maximum mark: 1]
19N.3.HL.TZ0.19a

The table below summarizes the distribution of the amino acids lysine and tryptophan in four food items.

The table below shows the average content of lysine and tryptophan in diets of the UK and India. The Indian diet is mainly vegetarian.

[Source: reprinted from Protein and amino acid requirements in human nutrition. Copyright (2007).
https://www.who.int/nutrition/publications/nutrientrequirements/WHO_TRS_935/en/]

(a)

Distinguish between essential and non-essential amino acids.

[1]

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