Haemoglobin

True or false - despite many organisms having different variants of haemoglobin, they all have similar structures and functions

• True

• False

Tick the following statements that are correct for Haemoglobin

• Quaternary structure - able to load/unload oxygen

• 2 polypeptide chains (or globins)

• 4 polypeptide chains (or globins)

• One Haem group per globin

Each haem group can combine with how many oxygen molecules?

• 1

• 2

• 4

Which oxygen is the hardest load?

• 2nd oxygen molecule

• 1st oxygen molecule

• 3rd oxygen molecule

• 4th oxygen molecule

Haemoglobin loads oxygen

• in lower partial pressures of oxygen

• in higher partial pressures of oxygen

In which direction does the bohr shift move the oxygen dissociation curve

• Up

• down

• left

• right

True or false - the iron in the haem group is oxidised by oxygen

• True

• False

If there is a high partial pressure of oxygen, haemoglobin will have ....

• high oxygen saturation

• low oxygen saturation

Carbon dioxide can diffuse into red blood cells, what does it form inside of the red blood cell

• Carbonic anhydrase

• Carboxylic acid

• Carbonic acid

• Carbon acid

Carbonic acid in red blood cells, dissociates into what two things?

• water

• carbon dioxide

• H+ (protons)

• Hydrogen carbonate ions