Haemoglobin As Flashcards
how many polypeptides does haemoglobin have
4
how many haem groups does haemoglobin have
4
how many oxygen can each molecule of haemoglobin carry when fully saturated
4
what type of molecule is haemaglobin
a protein
where is haemoglobin found
red blood cells
where does haemoglobin pick up oxygen
the lungs
at a high or a low partial pressure does haemoglobin load oxygen
high
where does haemoglobin unload the oxygen
respiring tissues
what causes different types of haemoglobin
different primary structure
does haemoglobin have a tertiary or quaternary structure
quaternary
what chemical concentration is linked to unloading oxygen
high concentration of carbon dioxide
why is there a sigmoid shaped dissociation curve
first oxygen binds to haemoglobin causing small change in shape
this makes it easier for more oxygen to bind
what shape is a sigmoid curve
S shaped
which way would the curve be shifted for an organism with a high metabolic rate
the right
what does a curve shifted to the right mean for properties of the haemoglobin
lower affinity for oxygen
dissociates to respiring tissues more readily at higher partial pressure of oxygen
more oxygen for respiration more respiration for e.g. more heat
what does a curve shifted to the left mean about properties of the haemoglobin
haemoglobin has a higher affinity for oxygen
haemoglobin saturated and dissociated at lower partial pressure of oxygen
how would people with the same type of haemoglobin load more oxygen
have more red bloods cells so more haemoglobin
how does changes in CO2 concentration affect the curve
more respiration more CO2 lower pH reduced affinity for oxygen by changing shape of haemoglobin shifts curve right
