What is hemoglobin?
Q: What is hemoglobin?
A: Hemoglobin is a protein in red blood cells that contains iron and is used to transport oxygen around the human body.
Q: Where is hemoglobin found?
A: Hemoglobin is found in the red blood cells of all vertebrates apart from white-blooded fish. It also occurs in some invertebrates.
Q: What do some invertebrates use instead of hemoglobin?
A: Some invertebrates use other chemicals, such as hemocyanin.
Q: What other gases is hemoglobin involved in transporting?
A: Hemoglobin is involved in the transport of other gases besides oxygen. It carries some of the body's respiratory carbon dioxide (about 20-25% of the total).
Q: What gives red blood cells their color?
A: Red blood cells get their color from hemoglobin, which is red.
Q: How many hemoglobin molecules are in each red blood cell?
A: There are millions of hemoglobin molecules in each red blood cell.
Q: How many red blood cells are there in the human body?
A: There are millions of red blood cells in the human body.
