Once oxygen attaches to iron in hemoglobin, _____.
A) oxygen enters the lungs
B) carbon dioxide is released from the iron in haemoglobin
C) carbon dioxide is exhaled from the lungs
D) oxygenated hemoglobin is transported in blood to body cells
E) the iron in hemoglobin picks up carbon dioxide from cells and transports it to the lungs
Correct Answer:
Verified
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