DP Biology (first assessment 2025)
Question 19M.1A.SL.TZ2.2
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1A.SL.TZ2.2 |
| Level | SL | Paper | 1A | Time zone | TZ2 |
| Command term | Calculate | Question number | 2 | Adapted from | N/A |
2.
[Maximum mark: 1]
19M.1A.SL.TZ2.2
The magnification of the micrograph is 2000×.
[Source: https://upload.wikimedia.org/wikipedia/commons/6/6c/HeLa_cells_stained_with_Hoechst_33258.jpg
by TenOfAllTrades.]
What is the maximum diameter of the nucleus in the cell labelled X?
A. 10 μm
B. 10 nm
C. 20 μm
D. 20 nm
[1]
Markscheme
A
Examiners report
Many students found it difficult to calculate the maximum diameter of the nucleus without a calculator.
