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We need energy to exercise - Edexcel - GCSE Physical Education - Question 4 - 2020 - Paper 1
Question 4
We need energy to exercise. (a) Complete Table 4 by stating a different energy source for each type of exercise. Type of exercise Energy source for type of exerc... show full transcript
Worked Solution & Example Answer:We need energy to exercise - Edexcel - GCSE Physical Education - Question 4 - 2020 - Paper 1
Step 1
Step 2
Explain which type of exercise gives lactic acid as a by-product.
Answer
Anaerobic exercise gives lactic acid as a by-product because it occurs when oxygen is not used effectively to produce energy. In anaerobic conditions, the body relies on carbohydrate sources for energy, which leads to lactic acid accumulation when the demand for energy exceeds the oxygen supply.