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Date November 2018 Marks available 1 Reference code 18N.1.HL:.tz0.11
Level Higher Level Paper Paper 1 Time zone time zone 0
Command term Question number 11 Adapted from N/A

Question

Which describes the lactic acid system?

A. Anaerobic energy system that produces 1 ATP

B. Aerobic energy system that produces 36 ATP

C. Catabolic reaction that uses one molecule of phosphocreatine

D. Energy system that can fuel high-intensity work for 90 seconds

Markscheme

D

Examiners report

Mid-ranking question.

Syllabus sections

Topic 3: Energy systems » 3.3. Nutrition and energy systems » 3.3.7. Describe the production of ATP by the lactic acid system.
Topic 3: Energy systems » 3.3. Nutrition and energy systems
Topic 3: Energy systems

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