DP Biology (first assessment 2025)
Question 19M.2.SL.TZ1.11
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.2.SL.TZ1.11 |
| Level | SL | Paper | 2 | Time zone | TZ1 |
| Command term | Deduce | Question number | 11 | Adapted from | N/A |
11.
[Maximum mark: 1]
19M.2.SL.TZ1.11
Yeast cells, Saccharomyces cerevisiae, were incubated with and without glucose at three different temperatures for a period of four minutes, during which the rate of CO2 production was measured with a CO2 sensor.
[Source: © International Baccalaureate Organization 2019]
What conclusion can be drawn from the results of this experiment?
A. Yeast uses lipids rather than glucose in respiration at low temperatures.
B. Addition of glucose has a greater impact on rates of cell respiration at lower temperatures.
C. Rates of cell respiration increase with temperature.
D. More glucose is produced at higher temperatures.
[1]
Markscheme
C
