2007-01-25 10:07:16 · 4 answers · asked by ? 2 in Science & Mathematics ➔ Biology
Hemoglobin, used to transfer oxygen molecules from the lungs to the cells and carbon dioxide molecules from the cells to the lungs. The oxygen is brought into the lungs during respiration (breathing in) while carbon dioxide leaves the lungs during expiration (breathing out).
2007-01-25 10:18:05 · answer #1 · answered by dhk454@sbcglobal.net 1 · 1⤊ 0⤋
To the three answerers above: No, hemoglobin is not exactly the iron part. The iron part is called heme (or haem), or more technically, iron-protoporphyrin IX. Think of it this way:
The red blood cell is made of many, many hemoglobins.
A hemoglobin is made of two parts: the protein part, which does not contain iron, and the heme (which is not considered protein).
The heme is made of four organic rings that connect to a central iron ion.
2007-01-25 11:07:19 · answer #2 · answered by Telodrift 2 · 1⤊ 1⤋
Iron is found in the hemoglobin molecules that carry oxygen in blood.
2007-01-25 10:18:02 · answer #3 · answered by Kender_fury 3 · 1⤊ 0⤋
Hemoglobin. It transports oxygen from the lungs to elsewhere.
2007-01-25 10:17:30 · answer #4 · answered by retzy 4 · 1⤊ 0⤋