Question

iron is part of the hemoglobin in red blood cells. what is the purpose of hemoglobin?
multiple choice
hemoglobin transports iron from the liver to the body cells.
hemoglobin transports essential fatty acids in the bloodstream.
hemoglobin transports oxygen from lungs to body cells.
hemoglobin binds oxygen in muscle tissue.

Explanation:

To determine the purpose of hemoglobin, we analyze each option:

• The first option is incorrect because hemoglobin does not transport iron from the liver to body cells.
• The second option is incorrect as hemoglobin is not responsible for transporting essential fatty acids.
• The third option is correct because hemoglobin, which contains iron, binds to oxygen in the lungs and transports it to body cells for cellular respiration.
• The fourth option is incorrect because myoglobin (not hemoglobin) is mainly responsible for binding oxygen in muscle tissue.

Answer:

C. Hemoglobin transports oxygen from lungs to body cells.