52. About respiratory pigment, which of the following statements is INCORRECT?
(A) Respiratory pigments are proteins that transport oxygen and greatly increase the amount of oxygen that blood can
carry.
(B) Arthropods and many molluscs have hemocyanin with copper as the oxygen-binding component.
(C) Hemoglobin is involved in the transport of O2 but not CO2.
(D) A small change in the partial pressure of oxygen can result in a large change in delivery of O2.
(E) CO2 produced during cellular respiration lowers blood pH and decreases the affinity of hemoglobin for O2; this is
called the Bohr shift.
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