Taking into account both oxygen requirements and ATP yield, which substrate is more efficient, fat or glucose?Group of answer choicesFat is more efficient.Glucose is more efficient.They are equally efficient.
Question
Taking into account both oxygen requirements and ATP yield, which substrate is more efficient, fat or glucose?Group of answer choicesFat is more efficient.Glucose is more efficient.They are equally efficient.
Solution
Fat is more efficient.
Here's why:
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ATP Yield: When it comes to ATP yield, fat produces more ATP compared to glucose. For every gram of fat, about 9 calories are produced, while for every gram of glucose, about 4 calories are produced. This means that fat provides more than twice the amount of ATP that glucose does.
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Oxygen Requirements: Fat does require more oxygen to metabolize compared to glucose. However, the ATP yield per oxygen molecule used is still higher for fat than for glucose. This
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