Question

what is hemoglobin a
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Answer 1

Answer:

Hemoglobin is a protein present in red blood cells, responsible for transporting oxygen from the lungs to cells in the body. Hemoglobin gives red blood cells their distinctive color. Hemoglobin levels differ between individuals, but men usually have higher hemoglobin levels than women

Explanation:

this is hemoglobin

Answer 2

Hemoglobin, or haemoglobin, abbreviated Hb or Hgb, is the iron-containing oxygen-transport metalloprotein in the red blood cells of almost all vertebrates as well as the tissues of some invertebrates. Hemoglobin in blood carries oxygen from the lungs or gills to the rest of the body.

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