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Haemoglobin in capillaries of the lungs ...

Haemoglobin in capillaries of the lungs is exposed to an oxygen pressure of 100. This haemoglobin is transported within erythrocytes to capillaries in muscles, where the oxygen pressure is 20. Which of the following will occur in a tired muscle?

A

Haemoglobin will bind oxygen from the muscle

B

Haemoglobin will enter muscle cells

C

Haemoglobin will release most of the oxygen it is carrying

D

Haemoglobin will release less than half of the oxygen it is carrying

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