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Chromosomes
Structures within cells that contain DNA and genetic information critical for reproduction, functioning, and growth.
Red Blood Cells
Cells in the blood that carry oxygen from the lungs to all parts of the body and return carbon dioxide to the lungs for exhalation.
Transporting Oxygen
The primary function of the respiratory and circulatory systems, allowing oxygen to be inhaled into the lungs, carried by red blood cells, and delivered to tissue.
Tissue Cells
The basic structural and functional units of tissues in living organisms, varying widely in structure and function based on their location and task.
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