KROK 1 2014 – Question 4 · KROK (Medicine) · Physiology

In a young man during exercise, the minute oxygen uptake and carbon dioxide emission equalled to 1000 ml. What substrates are oxidized in the cells of his body?

  1. A. Carbohydrates and fats
  2. B. Carbohydrates and proteins
  3. C. Proteins
  4. D. Carbohydrates
  5. E. Fats
Hint

Work out the respiratory quotient from the two gas volumes and recall which metabolic fuel gives exactly that value.

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