ASCP Phlebotomy Technician Certification Practice Exam 2026 – Comprehensive All-in-One Study Guide for Success!

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What is the most predominant function of hemoglobin in the blood?

Transports carbon dioxide

Transports nutrients

Transports oxygen

The most predominant function of hemoglobin in the blood is to transport oxygen. Hemoglobin is a specialized protein found in red blood cells that binds to oxygen in the lungs and carries it to various tissues and organs throughout the body. This function is crucial for cellular respiration, where oxygen is required to produce energy within cells. The structure of hemoglobin allows it to effectively pick up oxygen in the high-oxygen environment of the lungs and release it in the lower-oxygen environment of tissues that need it.

While hemoglobin can also carry some carbon dioxide back to the lungs, this is not its primary role. It does not play a significant role in transporting nutrients or electrolytes. The primary focus of hemoglobin's function is the efficient transport of oxygen, making it essential for maintaining metabolic processes necessary for life.

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Transports electrolytes

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