Respiratory pigments in animals
A) are needed because the concentration of oxygen is low in physiological fluid.
B) are always packaged into erythrocytes.
C) bind irreversibly with oxygen.
D) work independently of the partial pressure of oxygen.
E) are only found in vertebrates.

Question

Quizplus · Accepted Answer

Respiratory pigments increase the oxygen-carrying capacity of the blood because the solubility of oxygen in physiological fluids is low, facilitating oxygen transport from the lungs or gills to tissues.

Respiratory Pigments in Animals