AQA AS BIOLOGY - VARIATION IN HAEMOGLOBIN

Everything you need to know on haemoglobin :)

Enjoy....

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  • Created by: Rosie
  • Created on: 18-05-11 11:40
Hb + 4O2 <---> ?
HbO8
1 of 8
What gives haemaglobin its red colour?
Iron
2 of 8
How many oxygen molecules can each haemoglobin carry?
4
3 of 8
Where in the body would you find a low partial pressure of oxygen?
respiring tissues
4 of 8
When does haemoglobin give up its oxygen more readily?
higher partial pressure
5 of 8
What protein structure does haemaglobin have?
Quaternary
6 of 8
The dissociation curve is S shaped because....
As the Hb starts to become more saturated, it gets harder for more oxygen molecules to join when it was easier at first
7 of 8
Organisms that are very active and have high oxygen demand have a lower affinity for oxygen then human haemoglobin so the curve is to the...
right of the human one
8 of 8

Other cards in this set

Card 2

Front

What gives haemaglobin its red colour?

Back

Iron

Card 3

Front

How many oxygen molecules can each haemoglobin carry?

Back

Preview of the front of card 3

Card 4

Front

Where in the body would you find a low partial pressure of oxygen?

Back

Preview of the front of card 4

Card 5

Front

When does haemoglobin give up its oxygen more readily?

Back

Preview of the front of card 5
View more cards

Comments

Chris Broadbent

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Question 5, if a higher pp oxygen is released readily, then at the lungs where there is a higher pp oxygen it will release oxygen easier than at respiring tissues where there is a low pp oxygen... However if you said the pp carbon dioxide for losing oxygen readily that would be correct... This question is a little too ambiguous for me

sophia khan

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Question 8 is wrong it has a low affinity not high.

Laura

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Question 8 is right. Because if they live in environment with low oxygen concentration it is deficient so it has a higher affinity because it needs to take up enough oxygen.

It's is oxygen efficient that is lower affinity because the pre is less need for lots of oxygen to be taken up but it needs to be released in the body more readily because of respiration as they are more active.

Higher affinity. Takes up oxygen more readily but releases less readily
Lower affinity. Takes up oxen less readily but releases I more readily.

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