Praxis 5857 Practice Test Practice Question
A deficiency of which of the following minerals is of particular concern to athletes because of its role in the oxygen transport process?
Correct Answer: C
Rationale: Iron is essential for the production of hemoglobin, the protein in red blood cells that carries oxygen throughout the body. Athletes, who require increased oxygen delivery for optimal performance, are particularly vulnerable to iron deficiency, which can lead to fatigue and decreased endurance.
Calcium is important for bone health and muscle function but does not play a direct role in oxygen transport. Zinc supports immune function and protein synthesis, but its connection to oxygen transport is minimal. Potassium is crucial for nerve function and muscle contraction, yet it does not directly influence the oxygen-carrying capacity of the blood.
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