| Date | May 2019 | Marks available | 1 | Reference code | 19M.1.SL.tz0.14 |
| Level | Standard Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Question number | 14 | Adapted from | N/A |
Question
Which energy system is the most rapid to resynthesize ATP?
A. Anaerobic glycolysis
B. Aerobic glycolysis
C. Lactic acid
D. Creatine phosphate
Markscheme
D
Examiners report
Mid-difficulty question with a strong discrimination index. Answer B provided the greatest distraction.
