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Which of the following applies to the skeletal muscle fibres that are most useful during a cross-country ski race? | Number of mitochondria | Blood supply | Generation of ATP | |-----------------------|--------------|------------------| | A | low | glycolysis only | | B | high | glycolysis only | | C | low | aerobic respiration| | D | high | aerobic respiration| - Scottish Highers Human Biology - Question 11 - 2023
Question 11
Which of the following applies to the skeletal muscle fibres that are most useful during a cross-country ski race? | Number of mitochondria | Blood supply | Generat... show full transcript
Worked Solution & Example Answer:Which of the following applies to the skeletal muscle fibres that are most useful during a cross-country ski race? | Number of mitochondria | Blood supply | Generation of ATP | |-----------------------|--------------|------------------| | A | low | glycolysis only | | B | high | glycolysis only | | C | low | aerobic respiration| | D | high | aerobic respiration| - Scottish Highers Human Biology - Question 11 - 2023
Step 1
Number of mitochondria, Blood supply, Generation of ATP - Choose the most suitable option
Answer
To determine the most suitable muscle fibres for a cross-country ski race, we analyze the energy demands of such endurance sports, which are primarily reliant on sustained energy from aerobic respiration.
The options indicate that muscle fibres with high mitochondria and large blood supply generate ATP through aerobic respiration. Thus, option D (high mitochondria, large blood supply, aerobic respiration) is the correct choice, as these characteristics support prolonged activity, crucial for cross-country skiing.