| Date | May 2022 | Marks available | 1 | Reference code | 22M.1.SL.tz0.13 |
| Level | Standard Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Question number | 13 | Adapted from | N/A |
Question
Which represents the production of adenosine triphosphate (ATP) via the aerobic glycolysis system?
A. PC + ADP → 1ATP + C
B. glucose → pyruvate → 2 ATP + lactate + H+
C. glucose → pyruvate + O2 → acetylCoA → Krebs cycle → electron transport chain → 38 ATP + H2O + CO2 + heat
D. ADP + P = ATP
Markscheme
C
Examiners report
Candidates confidently answered this question, answer C was the popular choice. This was one of the easier questions on the paper, however the question covered the topic in a different way and it was pleasing to see pupils score well on this question.
