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Pearson Edexcel IAL Biology 7.5 Lactate after anaerobic respiration

Practise what happens to lactate after anaerobic respiration, from sprint contexts to blood pH changes and recovery metabolism.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
A2

Exam points

  • describe lactate moving from muscle into blood and being converted in the liver
  • explain why lactate accumulation lowers pH and makes muscle more acidic

7.5—Lactate after anaerobic respiration question 1

[Maximum number: 3]

The fastest recorded speed by a human was set by Usain Bolt sprinting in 2009. He achieved a speed of 12.3 metres per second.

During a sprint race, leg muscles produce lactate. Describe what happens to the lactate at the end of the race.

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