| Date | May 2017 | Marks available | 1 | Reference code | 17M.1.SL.TZ2.4 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 4 | Adapted from | N/A |
Question
What is evidence for the endosymbiotic theory?
A. RNA can catalyse metabolic reactions.
B. Meteorites contain organic molecules.
C. Amino acids can be synthesized from inorganic compounds.
D. Mitochondria possess their own DNA.
Markscheme
D
Examiners report
[N/A]
