DP Biology (last assessment 2024)
Question 23M.1.SL.TZ2.1
| Date | May 2023 | Marks available | [Maximum mark: 1] | Reference code | 23M.1.SL.TZ2.1 |
| Level | SL | Paper | 1 | Time zone | TZ2 |
| Command term | Question number | 1 | Adapted from | N/A |
1.
[Maximum mark: 1]
23M.1.SL.TZ2.1
How would surface area, volume and surface area to volume ratio of a cell change as the cell becomes bigger, if the cell does not change shape?
| Surface area | Volume | Surface area : volume | |
| A. | Increase | Increase | Increase |
| B. | Increase | Increase | Decrease |
| C. | Increase | Decrease | Decrease |
| D. | Decrease | Increase | Increase |
[1]
Markscheme
B
Examiners report
This question asked about changes in the surface area to volume ratio as a cell gets bigger. Some centres suggested this was too mathematical for some students though the topic is included in Section 1.1 of the biology guide — Introduction to cells. The question discriminated well with most of the stronger candidates answering correctly.