xabsx
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#1
Report Thread starter 6 years ago
#1
There's a couple questions I'm unsure how to answer:

Explain if there is an increase in the temperature of the water, why is there an increase volume of water passing over the gills in a fish?

Explain the advantage of an oxygen dissociation curve for haemoglobin shifting to the right during vigorous exercise.

The exam board is AQA
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Bruno26
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#2
Report 6 years ago
#2
(Original post by xabsx)
There's a couple questions I'm unsure how to answer:

Explain if there is an increase in the temperature of the water, why is there an increase volume of water passing over the gills in a fish?

Explain the advantage of an oxygen dissociation curve for haemoglobin shifting to the right during vigorous exercise.

The exam board is AQA
I think it's because increasing temperature of water, increases the collisions between enzymes reactions - so it increases the volume maybe (not sure about this one to be honest)
But....
The advantage of an oxygen dissociation curve shifting to the right is:
1) Haemoglobin has low affinity for oxygen, so it unloads more oxygen
2) This occurs at respiring tissues, where it has low partial pressure
3) More oxygen is released which can be used for respiration; beneficial during vigorous exercise
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