If p50 = 2.5 torr for shark Mb (myoglobin) and p50 = 1.5 torr for seal Mb, please pick ALL of the the statements that are correct:
Question options:
1. When pO2 = 1.5 torr, seal Mb is 50% saturated with oxygen.
2. When pO2 = 20 torr, seal Mb is more than 90% saturated with oxygen.
3. When pO2 = 20 torr, shark Mb is more than 90% saturated with oxygen.
4. When pO2 = 10 torr, YO2 or the fractional saturation of seal Mb with oxygen is LOWER than for shark Mb.
5. Seal Mb binds oxygen more tightly than shark Mb, since the p50 value is lower, which may help to explain some of the differences in physiology between seals and sharks
