DP Chemistry (last assessment 2024)
Question 20N.3.sl.TZ0.a(i)
| Date | November 2020 | Marks available | [Maximum mark: 1] | Reference code | 20N.3.sl.TZ0.a(i) |
| Level | sl | Paper | 3 | Time zone | TZ0 |
| Command term | Determine | Question number | a(i) | Adapted from | N/A |
a(i).
[Maximum mark: 1]
20N.3.sl.TZ0.a(i)
Proteins are polymers of amino acids. A paper chromatogram of two amino acids, A1 and A2, is obtained using a non-polar solvent.
© International Baccalaureate Organization 2020.
Determine the value of A1.
[1]
Markscheme
✔
Accept any value within the range “”.
Examiners report
Many students scored this mark. The students who missed this mark that were close either measured from the top or bottom of the spot rather than the middle. A few students had answers that were greater than 1 which indicated a clear lack of understanding of this concept.
