carbon dioxide

There are ________ ways carbon dioxide is transported.

• one

• two

• three

• four

23% Carbon dioxide combines with haemoglobin to form....

• oxyhaemoglobin

• bicarbonate

• carbinohaemoglobin

• carbaminohaemoglobin

Bicarbonate ion (HCO₃^-) diffuses into bood plasma and is carried to the ______

• erthrocyte

• lungs/lung capillaries

• alveolus

• white blood cell

___% of carbon dioxide is dissolved and carried as carbonic acid (H₂CO₃)

• 100

• 23

• 7

• 200

During exhalation ________is expelled where it diffuses from lung capillaries into __________

• carbon dioxide, alveolus

• oxygen, alveolus

• alveolus, haemoglobin

• carbon dioxide, haemoglobin