Algonquin College Health Program Assessment (AC-HPAT) Practice Exam

Question: 1 / 400

Which compound in the blood carries oxygen around the body?

Platelets

Haemoglobin

The correct answer, haemoglobin, plays a crucial role in the transportation of oxygen throughout the body. Haemoglobin is a protein found in red blood cells and is specifically designed to bind to oxygen in the lungs. Once oxygen is attached, haemoglobin carries it through the bloodstream to various tissues and organs that require oxygen for cellular respiration, a process vital for energy production.

The structure of haemoglobin allows it to pick up oxygen efficiently and release it in areas of low oxygen concentration, ensuring that tissues receive the necessary amount of oxygen for metabolic activities. This ability to both bind and release oxygen is essential for maintaining overall bodily functions and supporting life.

In contrast, platelets are involved in blood clotting and do not play a role in oxygen transport. Fibrin is a protein that contributes to the clotting process by forming a mesh that helps stop bleeding, while leukocytes, or white blood cells, are primarily part of the immune system, helping to combat infections and foreign substances. These functions highlight the specialized role of haemoglobin in oxygen transport, differentiating it from the other components found in blood.

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Fibrin

Leukocytes

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