Blood containing CO2 is:
Correct answer: C. Reddish purple color
- A. Red color
- B. Blue color
- C. Reddish purple color
- D. Reddish blue color
Explanation
Blood containing carbon dioxide (CO2) is reddish purple in color. This is because CO2 binds to hemoglobin, a protein in red blood cells, and changes its shape. The change in shape makes the blood appear darker and more purple. Blood that is high in oxygen is bright red. As blood travels through the body and delivers oxygen to the tissues, it picks up CO2 as a waste product. The more CO2 that is in the blood, the darker it will appear. Overall, blood containing CO2 is reddish purple in color. The darker the blood, the more CO2 it contains.
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