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Date November 2013 Marks available 2 Reference code 13N.3.SL.TZ0.6
Level Standard level Paper Paper 3 Time zone TZ0
Command term Outline Question number 6 Adapted from N/A

Question

Outline which methods of ATP production are used in muscle fibres during different intensities of exercise.

Markscheme

both anaerobic and aerobic are used depending on the intensity of the exercise;

as intensity increases more anaerobic / at low intensity more aerobic;

creatine phosphate used for brief bursts of intense exercise;

Examiners report

Most candidates struggled to outline the methods of ATP production used in muscle fibres during different intensities of exercise.

Syllabus sections

Additional higher level » Topic 8: Metabolism, cell respiration and photosynthesis » 8.2 Cell respiration
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