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Hemoglobin contains a heme group with an Iron ion attached to it. The iron is what binds to O2.

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14y ago
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13y ago

There is an Fe2+ (iron) within the heme portion of hemoglobin. It binds exactly one molecule of oxygen.

This means that each hemoglobin can bind 4 oxygen molecules.

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9y ago

The iron in the hemoglobin is the site of the oxygen binding. Each iron can bind one O2 molecule, therefore the hemoglobin molecule is capable of binding a total of four O2 molecules.

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Q: What portion of hemoglobin molecule binds oxygen?
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Related questions

What is a protein that binds with oxygen molecules?

Hemoglobin binds with oxygen molecules. Hemoglobin is a protein molecule.


WHen hemoglobin binds its first oxygen molecule it is easier for other?

after one oxygen molecule binds to hemoglobin, it is easier for the other molecules to bind to the hemoglobin. this is known as cooperative binding.


What does Each hemoglobin molecule contains an atom of iron that binds reversibly with?

oxygen


What is the name of the thing in our blood that transport oxygen?

Red blood cells are packed full of a protein called hemoglobin. Hemoglobin has a molecule of iron in each protein molecule. This hemoglobin is what carries oxygen. The oxygen binds with the iron.


How is oxygen transferred to the cell?

Oxygen is transferred to the cells by our red blood cells which have a special molecule called hemoglobin inside. The hemoglobin molecule binds to the oxygen molecule and the reb blood cells transports the oxygen to wherever it is needed.


How is transported oxygen by blood in animals?

Oxygen binds to a molecule called hemoglobin in red blood cells.


What molecule binds oxygen?

The molecule that bind oxygen in the blood stream is hemoglobin. The O2 attaches to the molecule allowing it to be carried around the body to the other cells.


Oxygen binds with hemoglobin in the blood to form?

oxygen binds with hemoglobin in the lungs and forms oxyhemoglobin.


How does oxygen circulate in the body?

Oxygen circulates through the body in blood. A molecule of oxygen (O2) from the lungs binds loosely to a molecule of hemoglobin in a red blood cell. The red blood cell travels through the capillaries and the oxygen molecule is released from the hemoglobin and is delivered to the cells.


How does circulate in the body?

Oxygen circulates through the body in blood. A molecule of oxygen (O2) from the lungs binds loosely to a molecule of hemoglobin in a red blood cell. The red blood cell travels through the capillaries and the oxygen molecule is released from the hemoglobin and is delivered to the cells.


What component of blood contains iron that binds with oxygen?

Red blood cells contain the substance haemoglobin, which is an iron-based molecule that binds to oxygen molecules for transport around the body.


Does CO2 bind at the same site on the hemoglobin molecule as O2 If not where does CO2 bind?

No. Carbon monoxide binds to the same site as oxygen, i.e. the central iron. Carbon dioxide binds to the globin molecule.