Which chemical element is responsible for the red color of blood?
ACalcium
BCopper
CIron
DMagnesium
Explanation
Hemoglobin, the protein in red blood cells that transports oxygen, contains iron atoms at its core, which gives blood its characteristic red color.
Exam Relevance
- Topic: Physics, Biology, Chemistry & Astronomy
- Subtopic: Human Anatomy, Earth Science, Solar System & Basic Principles
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