The Association of O₂ with Deoxy-Myoglobin

Multiple Choice

The association of O₂ with deoxy-myoglobin

A) causes a 60 degree rotation of the porphyrin ring.
B) is accompanied by the dissociation of 2,3-bisphosphoglycerate.
C) leads to the reduction of the heme Fe ³⁺ to Fe ²⁺.
D) pulls the iron ion into the plane of the porphyrin ring.
E) replaces the distal histidine residue in the iron coordination system.