Which has hemoglobin with the lowest O2 affinity

Reference no: EM13527859

Listed below are hemoglobin P50 values and blood O2 capacity in a number of different species.
Which animal has hemoglobin with the highest O2 affinity and which has hemoglobin with the lowest O2 affinity?
Animal P50 O2 capacity

Iguana 51 10.5
Rana (frog-lungs and skin) 39 8.1
Orcinus (whale) 34 21.5
Adelie penguin 34 22.4
Adult goat 32 14
Rabbit 32 15.6
Harbor seal 31 29.3
Sea otter 31 21.3
Human adult 30 14.4
Alligator 28 6.7
Horse 26 16
Human fetus 20 8.4
Pseudemys (turtle) 19.5 8.7
Fetal goat 19 12
Dogfish 17 4.4
Mackerel 16 15.7
Necturus (salamander-gills) 15 6.3
Lumbricus (earthworm) 6.8 5.3
Carp 5 12.5
Chironomus (midge) 0.3 8.5

So i know that P50 is the P02 at which oxygen is 50% saturated...
and that then as P50 decreases, oxygen affinity increases, and vice versa.

However they are giving me a constant P50 and an O2 capacity value...
I can't seem to get what they what me to do... does the O2 capacity value mean the amount of O2 that is in the blood at the moment?
If so, then the greatest positive difference would be the animal with the greatest affinity for oxygen... so it would be the Iguana?

Reference no: EM13527859

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