Edexcel IAL Haemoglobin Quiz

What is carboxyhaemoglobin?

• A. A form of oxygen-haemoglobin

• B. Haemoglobin in the presence of carbon dioxide

• C. A form of deoxyhaemoglobin

• D. Haemoglobin in the presence of high partial pressure

What is formed when oxygen binds with haemoglobin?

• A. Haemoglobin oxide

• B. Oxyhaemoglobin

• C. Carboxyhaemoglobin

• D. Deoxyhaemoglobin

How many types of subunit does haemoglobin have?

• 1

• 2

• 3

• 4

What is the process of oxygen binding to haemoglobin in the lungs called?

• A. Loading

• B. Unloading

• C. Diffusion

• D. Respiring

How many oxygen molecules can each molecule of haemoglobin carry?

• A. 1

• B. 2

• C. 3

• D. 4

What is haemoglobin?

• A. A lipid found in red blood cells

• B. A water-soluble globular protein found in red blood cells

• C. A type of white blood cell

• D. A hormone produced by the liver

Why does fetal haemoglobin have a higher affinity for oxygen compared to adult haemoglobin?

• A. Fetal haemoglobin has more haem groups

• B. Fetal haemoglobin requires less oxygen

• C. Fetal haemoglobin must absorb oxygen efficiently at low partial pressure

• D. Fetal haemoglobin lacks alpha polypeptide chains

What is the Bohr effect?

• A. The release of carbon dioxide by respiring cells

• B. The effect of fetal haemoglobin on oxygen saturation

• C. The increase in haemoglobin affinity for oxygen in the presence of carbon dioxide

• D. The decrease in haemoglobin affinity for oxygen in the presence of carbon dioxide