Which of the following is true of iron?

Question

Iron prevents tooth decay and helps form growing bones and teeth.

Potassium and iron form crystals to strengthen bones.

Iron is a bulk mineral.

The iron in hemoglobin allows oxygen to be carried in red blood cells.

Answer 1

The true statement about iron is:

The iron in hemoglobin allows oxygen to be carried in red blood cells.

Iron is an essential component of hemoglobin, the protein in red blood cells that binds to oxygen and allows it to be transported throughout the body. The other statements are either incorrect or misleading.