Analyze the structural differences between hemoglobin and myoglobin that lead to their distinct oxygen binding curves.

Myoglobin has multiple subunits allowing cooperativity, while hemoglobin has a single subunit and does not exhibit cooperativity.

Hemoglobin has multiple subunits allowing cooperativity, while myoglobin has a single subunit and does not exhibit cooperativity.

Both hemoglobin and myoglobin have multiple subunits, but only hemoglobin exhibits cooperativity.

Neither hemoglobin nor myoglobin exhibit cooperativity due to their single subunit structure.