Gaseous Exchange

To carry carbon dioxide

To carry oxygen

To regulate blood pressure

To produce energy

It decreases the affinity for oxygen

It has no effect on the other subunits

It increases the affinity for oxygen

It causes the haemoglobin to release carbon dioxide

Magnesium

Zinc

Iron

Chlorine

Hb + 4O₂ → HbO₂

Hb + O₂ → HbO

Hb + 2O₂ → HbO₂

Hb + O₂ → HbO₂

Dissolved CO₂ in blood plasma

As bicarbonate ion.

As carbominohaemoglobin

Bound to the amino group of hemoglobin.

Bound to the haem group of haemoglobin

It shows a linear relationship

It shows a parabolic relationship

It shows a sigmoidal relationship

It shows no relationship

It indicates a linear relationship

It shows cooperativity in binding

It suggests no affinity changes

It represents a constant saturation

It decreases to 70%

It remains at 100%

It increases to 98%

It becomes zero

It indicates a low saturation of hemoglobin

It indicates the cooperative binding of haemoglobin with O₂

It indicates a rapid release of O₂

It indicates a slow release of O₂

28%

80%

70%

98%

28%

80%

70%

98%

To transport carbon dioxide

To store oxygen

To release carbon dioxide

In charge of gaseous exchange

Both curves show the increase in saturation with O₂ when P_O2 is high

Both curves show the increase in dissociation with O₂ when P_O2 is low

Both curves are identical in shape

Both curves are affected by pH levels

hot and dry day

noon