Quiz on the Role of Haemoglobin

What is the primary function of haemoglobin in red blood cells?

• Transport of carbon dioxide

• Transport of nutrients

• Transport of oxygen

• Transport of hormones

How many oxygen molecules can one molecule of haemoglobin carry?

• Three

• Two

• Five

• Four

What is formed when oxygen binds to haemoglobin?

• Hydrogen carbonate

• Deoxyhaemoglobin

• Oxyhaemoglobin

• Carbaminohaemoglobin

What is the term for the process where the binding of one oxygen molecule makes it easier for others to bind?

• Cooperative binding

• Competitive binding

• Non-competitive binding

• Sequential binding

What enzyme catalyzes the reaction between carbon dioxide and water in red blood cells?

• Lactate dehydrogenase

• Catalase

• Hemoglobinase

• Carbonic anhydrase

What effect does increased carbon dioxide have on haemoglobin's affinity for oxygen?

• Increases binding capacity

• No effect

• Decreases affinity

• Increases affinity

What is the shape of the oxygen dissociation curve for haemoglobin?

• Circular

• Curved

• Exponential

• Linear

What is the Bohr effect?

• Increased oxygen release at high pCO2

• Decreased carbon dioxide transport

• Decreased oxygen release at high pCO2

• Increased oxygen binding at low pO2

How does foetal haemoglobin differ from adult haemoglobin?

• It binds carbon dioxide more effectively

• It cannot bind oxygen

• It has a higher affinity for oxygen

• It has a lower affinity for oxygen

What happens to the oxygen dissociation curve of foetal haemoglobin compared to adult haemoglobin?

• It shifts to the right

• It shifts to the left

• It becomes linear

• It remains unchanged