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 f... show full transcript
Worked Solution & Example Answer:We need energy to exercise - Edexcel - GCSE Physical Education - Question 4 - 2020 - Paper 1
Step 1
Complete Table 4 by stating a different energy source for each type of exercise.
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Answer
Type of exercise
Energy source for type of exercise
Anaerobic
Carbohydrate
Aerobic
Fat
Step 2
Explain which type of exercise gives lactic acid as a by-product.
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Answer
Anaerobic exercise produces lactic acid because oxygen is not used during this type of activity. In anaerobic respiration, energy is generated quickly by breaking down carbohydrates, which can lead to the accumulation of lactic acid in the muscles.
