Binding of oxygen to myoglobin:
Myoglobin molecule contains a single O2 binding site and thus the saturation process is characterized by a simple hyperbolic curve, in contrast to hemoglobin, sigmoid saturation curve of which shows positive cooperativity of multiple oxygen binding sites. Ref: Lippincott's Biochemistry, 5th Ed page 26
Is characterized by the sigmoidal saturation curve
Occurs at multiple sites
Is characterized by the sigmoid and multiple hyperbolic saturation curve
Is characterized by the hyperbolic saturation curve