Cambridge IGCSE Biology practice

Paper 3 structured question: Anaerobic respiration

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Paper

Marks

Topic

Anaerobic respiration

Exam-style question

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Paper 3Theory (Core)1 marks

During intense exercise, muscles may not receive enough oxygen and switch to anaerobic respiration.

Description

Muscles produce energy anaerobically by converting glucose into lactic acid when oxygen is scarce.

a
State the word equation for anaerobic respiration in muscles during intense exercise.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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Paper 3Theory (Core)1 marks

Description

During intense exercise, muscles respire anaerobically to produce energy. This process converts glucose into lactic acid.

a
State the word equation for anaerobic respiration in muscles.
Your answer
Aim for approximately 1 distinct marking point.
[1]