Question

fill in the blank question
hemoglobin binds not only to oxygen but also protons and
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Explanation:

Hemoglobin is a protein in red blood cells. It has the property of binding to multiple substances. In addition to oxygen (\(O_2\)) and protons (\(H^+\)), it also binds to carbon dioxide (\(CO_2\)). This binding is crucial for the transport of gases in the body. When hemoglobin is in the tissues (where oxygen levels are low and carbon dioxide levels are high), it releases oxygen and binds carbon dioxide. Then, when it reaches the lungs (where oxygen levels are high and carbon dioxide levels are low), it releases carbon dioxide and binds oxygen again.

Answer:

carbon dioxide