| Date | May 2012 | Marks available | 1 | Reference code | 12M.1.SL.TZ1.4 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | State | Question number | 4 | Adapted from | N/A |
Question
Where in the cell do condensation reactions involving amino acids occur?
A. Nucleus
B. Golgi apparatus
C. Ribosomes
D. Lysosome
Markscheme
C
Examiners report
This question was a good discriminator, which was testing two elements of understanding, those of the condensation process and where in the cell amino acids are assembled into polypeptides. Just over half of candidates gave the correct answer of C, with many being drawn to B, the Golgi apparatus.
Although this question discriminated well, a large proportion of candidates chose option B instead of the correct response of A (endocytosis). It was thought that perhaps students had been drawn by the connection of osmosis and the word “fluidity” in the question.
