Bohr effect

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 and blood pH on the dissociation of oxyhaemoglobin.

• The affinity of haemoglobin toward oxygen.

• The affinity of haemoglobin towards carbon dioxide.

What colour line represents the oxygen saturation curve during intense exercise?

• blue

• black

• red

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

• up and left

• down and right

• down and left

• up and right

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 effect causes …………………………..

• shift B to happen

• shift A to happen

• affinity of haemoglobin for oxygen to increase

• affinity of haemoglobin for carbon dioxide to increase

Using the graph, what does graph A represent?

• graph of fetal haemoglobin

• graph of sickle celled haemoglobin

• graph of adult haemoglobin

• graph of denatured haemoglobin

Explain the relationship between pH and the oxygen-hemoglobin dissociation curve.

• pH has no effect on the oxygen-hemoglobin dissociation curve.

• A decrease in pH has no effect on the affinity of hemoglobin for oxygen.

• An increase in pH shifts the curve to the left, leading to increased affinity of hemoglobin for oxygen.

• A decrease in pH shifts the curve to the right, leading to decreased affinity of hemoglobin for oxygen.

Describe the role of carbon dioxide in the Bohr effect.

• Has no effect on the release of oxygen from hemoglobin

• Inhibits the release of oxygen from hemoglobin

• Facilitates the release of oxygen from hemoglobin

• Causes the binding of oxygen to hemoglobin