DP Biology (last assessment 2024)
Question 23M.1.HL.TZ2.4
| Date | May 2023 | Marks available | [Maximum mark: 1] | Reference code | 23M.1.HL.TZ2.4 |
| Level | HL | Paper | 1 | Time zone | TZ2 |
| Command term | Question number | 4 | Adapted from | N/A |
4.
[Maximum mark: 1]
23M.1.HL.TZ2.4
What is evidence for the endosymbiotic theory?
A. Eukaryote mitochondria contain DNA.
B. Prokaryotes evolved before eukaryotes.
C. Unicellular organisms exist as both prokaryotes and eukaryotes.
D. Prokaryote cells have no double membranes.
[1]
Markscheme
A
Examiners report
It was commented in the G2 forms that all the statements are true which is valid, but only response A provides evidence for the symbiotic theory.