Multiple choice

Which of the following gases is transported by haemoglobin of blood through out the body of animal?

  1. Oxygen

  2. Nitrogen

  3. Helium

  4. Hydrogen

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A Correct answer
Explanation

Hemoglobin in red blood cells binds to oxygen in the lungs and transports it throughout the body to deliver oxygen to tissues. Nitrogen is mostly inert and is not transported by hemoglobin. Helium is a noble gas with no biological transport role. Hydrogen is not a physiological gas transported in blood.

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