Gas Carriage - carbon dioxide

How is the majority of carbon dioxide carried in blood?

• Hydrogen ions

• Carbonic acid

• Carbonic anhydrase

• Bicarbonate

Which enzyme facilitates the conversion of carbon dioxide to bicarbonate and hydrogen ions?

• Carbonic bicarbonase

• Carbonic anhydrase

• Carbon bicarbonase

• Carbon anhydrase

How are hydrogen ions normally prevented from building up in the blood?

• They are buffered by bicarbonate until the reach the lungs

• They are buffered by haemoglobin until they reach the lungs

• They are buffered by bicarbonate until they reach the liver

• They are buffered by bicarbonate until they reach the liver

What happens if carbon dioxide builds up in the blood?

• It promotes the tense state in haemoglobin, more oxygen is carried

• It promotes the relaxed state in haemoglobin, less oxygen is carried

• It makes the blood more acidic

• It makes the blood more alkaline