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- 1. Multiple Choice
The majority of CO2 transport is in the form of...
hydrogen carbonate (bicarbonate)
CO2 in solution
carbaminohemoglobin
- 2. Multiple Choice
What enzyme is required for CO2 to be combined with water to make carbonic acid?
Carbonic anhydrase
Carbonase
Carbonic acid
- 3. Multiple Choice
The ion found in the haem group is...
Fe2+
Mg2+
CO2+
- 4. Multiple Choice
Oxygen saturated protein in the blood in the form of...
oxyhaemoglobin
haemoglobin
carbaminohaemoglobin
- 5. Multiple Choice
What is the partial pressure of O2 at respiring tissues?
High
Low
- 6. Multiple Choice
What is the partial pressure of CO2 in the lungs?
High
Low
- 7. Multiple Choice
Which of the following is NOT the structure of haemoglobin?
Each haemoglobin molecule contains 4 haem group
Every each haem group in haemoglobin can bind with 4 molecule of oxygen
Haemoglobin is a quaternary structure
Each haemoglobin has 2 α-chain and 2 β-chain polypeptide subunits
- 8. Multiple Choice
Oxyhaemoglobin gives up O2 when…
CO2 concentrations are high
pH values are high
Body temperature is lowered
O2 concentrations are higher
- 9. Multiple Choice
The acidity due to the accumulation of H+ in erythrocytes is buffered by...
Haemoglobin
Carbon dioxide
Plasma proteins
Oxygen
- 10. Multiple Choice
Carbonic anhydrase in the erythrocytes…
Catalyzes the removal of oxygen from the erythrocytes
Catalyzes the reaction of carbon dioxide with water to form carbonic acid
Catalyzes the conversion of carbon dioxide into water
Catalyzes the increase in blood pH
- 11. Multiple Choice
Carbon dioxide and water combine to form...
hydrogen carbonate ions
carbonic acid
hydrogen ions
hydrogen bicarbonate
- 12. Multiple Choice
When carbon dioxide binds directly with haemoglobin it forms...
carbon diooxyhaemoglobin
carboxyhaemoglobin
carboglobin
carbaminohaemoglobin
- 13. Multiple Choice
To what process CO2 dissolved in the plasma?
Active transport
Osmosis
Diffusion
Protein Synthesis
- 14. Multiple Choice
A high concentration of hydrogen ions in the RBC means...
A low pH
A high pH
Close to neutral pH
- 15. Multiple Choice
CO2 then diffuses out of capillaries into the alveoli of the lungs to be exhaled.
arteries
veins
arteriole
capillaries
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