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Question 18M.2.SL.TZ2.1b.i

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.2.SL.TZ2.1b.i
Level SL Paper 2 Time zone TZ2
Command term Distinguish Question number b.i Adapted from N/A
b.i.
[Maximum mark: 1]
18M.2.SL.TZ2.1b.i

The yellow mealworm (Tenebrio molitor) is native to temperate regions of the world and has been studied as a possible means of producing food in countries with that type of climate. The amino acid content of yellow mealworms and cattle was analysed. The table shows the results for seven amino acids that are required in the human diet.

(b.i)

Distinguish between the amino acid contents of yellow mealworms and cattle.

[1]

Markscheme

a. mealworms have more isoleucine/leucine/valine than cattle 

b. cattle have more lysine/methionine/phenylalanine/threonine 

c. the total proportion of these amino acids is «slightly» greater in cattle (188 to 176) 

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