| Date | May 2010 | Marks available | 1 | Reference code | 10M.1.HL.TZ1.29 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Identify | Question number | 29 | Adapted from | N/A |
Question
During glycolysis a hexose sugar is broken down to two pyruvate molecules. What is the correct sequence of stages?
A. Phosphorylation → oxidation → lysis
B. Oxidation → phosphorylation → lysis
C. Phosphorylation → lysis → oxidation
D. Lysis → oxidation → phosphorylation
Markscheme
C
Examiners report
Some teachers complained that the sequence of glycolysis is not needed, only the processes. It is hard to imagine how one can teach the process without doing so in a sequence.
Syllabus sections
Additional higher level » Topic 8: Metabolism, cell respiration and photosynthesis » 8.2 Cell respiration
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