Comparing Haemoglobin in Different Organisms

Question 1

What are the two enviroments?

Answer 1

high O2 environment and low O2 environment

Question 2

What are the benefits of oxyhaemoglobin dissocation curve?

high O2 enviroment

Answer 2

haemoglobin has a lower effinity for O2
releases more O2 at cells
useful for animals with a high rate of respiration

e.g. small mammals - high SA:Vol
lose more heat per gram of body
maintain internal temperature

Question 3

What are the benefits of the oxyhaem. curve with low O2 enviroment?

Answer 3

lower p.p of O2 in lungs
haemoglobin has a higher affinity for O2
able to load O2 at a lower p.p of O2