Answer the following question given this paragraph: Hemoglobin is an example of a transport protein in the blood. You can see how it works in Figure below . The heme parts of a hemoglobin molecule bind with oxygen. Each red blood cell has hundreds of hemoglobin molecules. This is how oxygen is carried in the blood to cells throughout the body. Q: The heme parts of a hemoglobin molecule bind with what element? Choices: - hydrogen - carbon - nitrogen - oxygen A:
Answer:
oxygen