DP Chemistry (last assessment 2024)
Question 18M.3.hl.TZ2.g
| Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.3.hl.TZ2.g |
| Level | hl | Paper | 3 | Time zone | TZ2 |
| Command term | Estimate | Question number | g | Adapted from | N/A |
g.
[Maximum mark: 1]
18M.3.hl.TZ2.g
Amino acids are the building blocks of proteins.
A different series of pepsin samples is used to develop a calibration curve.
Estimate the concentration of an unknown sample of pepsin with an absorbance of 0.30 from the graph.
[1]
Markscheme
0.65 «μg cm–3»
Accept any value in the range 0.60–0.70 «μg cm–3»
[1 mark]
