The symbol O2 denotes which of the following?

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Multiple Choice

The symbol O2 denotes which of the following?

O2 represents the diatomic molecule of oxygen—the two-atom form of oxygen that is inhaled and used by cells for energy production. It’s the actual molecular gas, not a bound form or a measurement. Ozone is a different species with three oxygen atoms (O3), so it isn’t what O2 denotes. Oxygen saturation is a percentage indicating how much of hemoglobin’s binding sites are occupied by oxygen, not the molecule itself. Oxyhemoglobin is the complex of hemoglobin bound to oxygen (HbO2), again not the free molecule O2.

O2 represents the diatomic molecule of oxygen—the two-atom form of oxygen that is inhaled and used by cells for energy production. It’s the actual molecular gas, not a bound form or a measurement.

Ozone is a different species with three oxygen atoms (O3), so it isn’t what O2 denotes. Oxygen saturation is a percentage indicating how much of hemoglobin’s binding sites are occupied by oxygen, not the molecule itself. Oxyhemoglobin is the complex of hemoglobin bound to oxygen (HbO2), again not the free molecule O2.

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