Which Molecules Are Respiratory Gases or Chemical Forms of Respiratory

question 53

Multiple Choice

Which molecules are respiratory gases or chemical forms of respiratory gases?
I. O₂
II. O₃
III. CO₂
IV. HCO₃^-
V. N₂

• A) I, II, and III
• B) I, II, III, and IV
• C) I, III, and IV
• D) I, III, and V

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