DP Chemistry (last assessment 2024)

Test builder »

Question 18M.3.sl.TZ1.d.ii

Select a Test
Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.sl.TZ1.d.ii
Level sl Paper 3 Time zone TZ1
Command term Suggest Question number d.ii Adapted from N/A
d.ii.
[Maximum mark: 1]
18M.3.sl.TZ1.d.ii

Many drugs, including aspirin, penicillin, codeine and taxol, have been modified from compounds that occur naturally.

Suggest one reason why codeine is more widely used than morphine as an analgesic.

[1]

Markscheme

codeine has a wider therapeutic window

 

Accept “codeine has lower activity” OR “codeine has lower risk of overdose” OR “codeine is less potent” OR “codeine has less side-effects”.

Do not accept “lower abuse potential for codeine” OR “less addictive «than morphine»” OR “codeine has a lower bioavailability” OR “available without prescription” OR “cheaper”.

[1 mark]

Syllabus sections