The Hemocyanin of Arthropods and Molluscs Differs from the Hemoglobin

Multiple Choice

The hemocyanin of arthropods and molluscs differs from the hemoglobin of mammals in that

A) the oxygen dissociation curve for hemocyanin is linear.
B) hemocyanin carries more carbon dioxide.
C) hemocyanin has protein coupled to copper rather than iron.
D) the protein of hemocyanin is not bound to metal.
E) hemocyanin is bound to sodium ions.