10. Which of the followings is not true? (A) Hemoglobin is a homologue of myoglobin (B) Hemoglobin is a tetramer whereas myoglobin is a monomer. (C) Hemoglobin exhibits a sigmoidal O saturation curve while myoglobin exhibits a hyperbolic curve. (D) Hemoglobin exhibits O 2 binding cooperativity while myoglobin does not. (E) Hemoglobin exhibits a higher degree of O 2 saturation at all physiologically relevant partial pressures of O 2 than does myoglobin.