Carbon monoxide bind easily to hemoglobin.
Mostly oxygen.
Carbon dioxide and BPG bind to amino acids located on hemoglobin. Oxygen molecules bind to the iron molecules located in the heme. Each hemoglobin molecule can carry up to four oxygen molecules, one on each of the four iron molecules. Nitric oxide can also bind to hemoglobin when either oxygen or carbon dioxide are bound to the hemoglobin.
Oxygen is one
Up to 4.
Hemoglobin is a complex protein with iron groups inside it that bind to oxygen.
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Oxygen and carbon monoxide
yes
A gaseous hormone that can bind to hemoglobin and be released to cause local vasodilation is nitric oxide. Nitric oxide is also known as nitrogen oxide.
Hemoglobin A1C
Haemoglobin combines with four molecules of oxygen.