heamoglobin and the dissocasiation curve

Question 1

how many polypeptide chains form a hemoglobin molecule

Answer 1

four

Question 2

how many heam groups are there

Answer 2

four

Question 3

what do the heam groups contain

Answer 3

iron

Question 4

why is important for iron important

Answer 4

because oxygen binds to heamoglobin

Question 5

what does oxygen and heamoglobin form

Answer 5

oxyheamoglobin

Question 6

what happens when there is lots of oxygen

Answer 6

lots of oxyheamoglobin is formed

Question 7

what happens when there is little oxygen

Answer 7

it is mostly heamoglobin

Question 8

what happens in a low oxygen enviroment

Answer 8

if there is not muchoxygen present heamoglobin will dissocate with oxygen

Question 9

what happensto oxyheamoglobin if there is more co2 more

Answer 9

more co2 heamoglobin dissocates with oxygen much faster compared to when there isn’t

Question 10

ifwhat does more co2 mean

Answer 10

reduces the affinity for heamoglobin- shifts to the right

Question 11

what happens to the dissociation curve if there is more co2

Answer 11

shifts to the right

Question 12

what is the dissocation curve of a illama and why

Answer 12

llamas live in a low oxygen environment there fore have a higher affinity with oxygen thus the dissocation curve shifts to the right as heamoglobin gives of oxygen more readily

Question 13

what is the dissociation curve of an egal

Answer 13

egals need lots of oxygen and so heamoglobins affinity with oxgen is lower so this dissociation curve shifts to the left

Question 14

why is the dissociation curve ‘s’ - shaped

Answer 14

becuase the first molecule is hard to bind to the heamoglobin, but once the firstone is bound it is much eaiser for the second and third to bind increasing the rate, however it is harder for the last molecule to bind