Which of the following statements concerning slow-twitch oxidative muscle fibers is false?Multiple ChoiceThey have low glycogen stores.They are well adapted to anaerobic activity.They split ATP slowly.They have large deposits of myoglobin.They have a well-developed blood supply.
Question
Which of the following statements concerning slow-twitch oxidative muscle fibers is false?Multiple ChoiceThey have low glycogen stores.They are well adapted to anaerobic activity.They split ATP slowly.They have large deposits of myoglobin.They have a well-developed blood supply.
Solution
The false statement concerning slow-twitch oxidative muscle fibers is: "They are well adapted to anaerobic activity."
Here's why:
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Slow-twitch oxidative muscle fibers do have low glycogen stores. This is true because these fibers primarily use aerobic metabolism, which relies on fats and proteins as well as carbohydrates.
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Slow-twitch fibers are not well adapted to anaerobic activity. This is false. These fibers are designed for long-duration, low-intensity activities that rely on aerobic metabolism, not short, high-intensity activities that rely on anaerobic metabolism.
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They split ATP slowly. This is true. Slow-twitch fibers are not designed for quick, powerful movements, so they don't need to split ATP quickly.
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They have large deposits of myoglobin. This is true. Myoglobin is a protein that stores oxygen in muscle cells, which is necessary for aerobic metabolism.
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They have a well-developed blood supply. This is true. A good blood supply is necessary to deliver the oxygen and nutrients these fibers need for aerobic metabolism.
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