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Question
Biology
Why is blood that flows from the lungs to the heart bright red rather than dark red?
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Q. Why is blood that flows from the lungs to the heart bright red rather than dark red?
Body Fluids and Circulation
A
Oxygen makes it red
100%
B
Carbon dioxide makes it red
0%
C
Gastric juices produce the red colour of the blood
0%
D
The lungs add a pigment (dye) to blood as it flows through them
0%
Solution:
Correct answer is (a) Oxygen makes it red