1

The diagram below shows the process of gaseous diffusion occurring in the alveolus.

Which of the following correctly states the contents of the blood at P and Q?
 

  P Q
A Oxygenated blood containing no carbon dioxide Deoxygenated blood containing carbon dioxide
B Deoxygenated blood containing carbon dioxide Oxygenated blood containing no carbon dioxide
C Deoxygenated blood containing no
carbon dioxide		 Oxygenated blood containing a lot of
carbon dioxide
D Oxygenated blood containing a lot of
carbon dioxide		 Deoxygenated blood containing no
carbon dioxide

  • A

  • B

  • C

  • D