Haemoglobin

What is the name of the molecule formed when oxygen binds to haemoglobin?

• oxyhaemoglobin

• oxygen-haemoglobin

• carbaminohaemlobin

• oxyglobin

The ion found in the haem group is what

• Mg²⁺

• O^2-

• Fe²⁺

• Fe³⁺

Haemoglobin is present in ______________________cells.

• White blood cells

• Red blood cells

• PLasma

• Platelets

Which of the following is FALSE concerning the haemoglobin molecule?

• In contains amino acids

• It contains iron

• It is composed of four polypeptide chains

• It is only found in humans

Each haemoglobin molecule can bind reversibly with

• one atom of oxygen

• one molecule of oxygen

• two molecules of oxygen

• four molecules of oxygen

• four atoms of oxygen

Oxyhaemoglobin gives up O₂ when …

• CO₂ partial pressures are high

• Body temperature is lowered

• pH values are high

• O₂ partial pressure are high

The Bohr Shift occurs in regions of …

• Increased partial pressure of oxygen.

• Decreased partial pressure of oxygen.

• Increased partial pressure of carbon dioxide.

• Decreased partial pressure of carbon dioxide.

The Bohr Effect/Shift moves the oxygen saturation curve in what direction

• Right

• Left

Which of the following explains the meaning of the Bohr effect?

• The effect of the partial pressure of oxygen in blood on the affinity of haemoglobin towards carbon dioxide.

• The effect of the partial pressure of carbon dioxide on the dissociation of oxyhaemoglobin.

• The affinity of haemoglobin towards carbon dioxide.

The process by which oxygen enters the blood from the alveoli is

• Osmosis

• Diffusion

• Facilitated diffusion

• Active transport