DP Chemistry (last assessment 2024)

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Question 19M.3.sl.TZ2.7d

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.3.sl.TZ2.7d
Level sl Paper 3 Time zone TZ2
Command term Suggest Question number d Adapted from N/A
d.
[Maximum mark: 1]
19M.3.sl.TZ2.7d

Phosphatidylcholine is an example of a phospholipid found in lecithin.

(d)

Lecithin aids the body’s absorption of vitamin E.

Suggest why vitamin E is fat-soluble.

[1]

Markscheme

long non-polar/hydrocarbon chain «and only one hydroxyl group»
OR
forms London/dispersion/van der Waals/vdW interactions with fat  [✔]

 

Note: Accept “alcohol/hydroxy/OH” for “hydroxyl” but not “hydroxide”.

Examiners report

This question was also not answered well even though it has appeared on previous tests. Many students missed the idea of a long or large non-polar chain when describing the structure.

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