DP Biology (last assessment 2024)
Question 19N.1.HL.TZ0.9
| Date | November 2019 | Marks available | [Maximum mark: 1] | Reference code | 19N.1.HL.TZ0.9 |
| Level | HL | Paper | 1 | Time zone | TZ0 |
| Command term | Determine | Question number | 9 | Adapted from | N/A |
9.
[Maximum mark: 1]
19N.1.HL.TZ0.9
Some photosynthesis experiments require water that is free of carbon dioxide. What is the best way to produce this?
A. Boiling and cooling water
B. Adding hydrogencarbonate solution to water
C. Adding alkali to water
D. Immobilizing carbon dioxide on alginate beads
[1]
Markscheme
A
