CAIE IGCSE Biology 12.3.6 Lactic Acid Build-up & Oxygen Debt
Practise explaining how vigorous exercise and limited oxygen cause lactic acid to accumulate in muscles and blood.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- link increased energy demand and limited muscle oxygen to anaerobic respiration
- state that lactic acid accumulates in muscles and blood during vigorous exercise
- identify this lactic-acid build-up as the cause of an oxygen debt
12.3.6—Lactic acid builds up in muscles question 1
[Maximum number: 2]
If exercise is very intense an oxygen debt is formed.
Complete the sentence.
An oxygen debt results in a build-up of [blank_1] in the [blank_2] during vigorous exercise.
lactic acid
muscles / blood
All question bank results loaded