| Date | May 2019 | Marks available | 1 | Reference code | 19M.1.SL.tz0.11 |
| Level | Standard Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Question number | 11 | Adapted from | N/A |
Question
What is the chemical composition of a protein molecule?
A. Glycerol and three fatty acids
B. Only carbon, hydrogen and oxygen
C. Only carbon and oxygen
D. Carbon, hydrogen, oxygen and nitrogen
Markscheme
D
Examiners report
Mid-difficulty question with a strong discrimination index.
