Question

the respiratory structure of molecules​

Answer 1

In the concentrations of oxygen found in the lungs, oxygen molecules bond to the iron(II) ions in the haem molecules to form oxyhaemoglobin. Figure 1 The respiratory system. One haemoglobin molecule carries four oxygen molecules. About 98.5% of the oxygen in blood is transported as oxyhaemoglobin.

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Answer 2

Answer:

The respiratory system facilitates breathing. In the alveoli tissue of the lungs, the exchange of oxygen and carbon dioxide molecules between the air and the bloodstream occurs by passive transport, so that oxygen is taken in and carbon dioxide and water are removed.

Explanation:

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