Choose the correct answers based on the oxygen binding curves shown below for lemur hemoglobin measured under two different conditions. Hb under condition A has a lower p50 value than Hb under condition B p50 for condition A is about 0.93 torr Oxygen binding to hemoglobin under condition A shows positive cooperativity p50 for condition A is about 20 tor Hb under condition A binds O2 more strongly than under condition B