DP Biology (first assessment 2025)
Question 20N.1B.SL.TZ0.b.i
| Date | November 2020 | Marks available | [Maximum mark: 1] | Reference code | 20N.1B.SL.TZ0.b.i |
| Level | SL | Paper | 1B | Time zone | TZ0 |
| Command term | Predict | Question number | b.i | Adapted from | N/A |
b.i.
[Maximum mark: 1]
20N.1B.SL.TZ0.b.i
The colours of the indicator in the jars ranged from yellow to purple after five hours.
Predict the distribution of indicator colours in jars 1 to 9.
[1]
Markscheme
the jars closer to the light had more purple colours
OR
the jar the furthest from the light was yellow
OR
purple to yellow
Allow for answers indicating colours for each jar within this range.
Examiners report
Most candidates predicted the colour range accurately from purple to yellow; weaker candidates either inverted the range or did not include the extremes (e.g. purple to magenta), which were stated in the question stem.
