Haemoglobin

Question 1

Haemoglobins?

Answer 1

• a group of chemically similar molecules found in many diff organisms
• haemoglobin is protein w quaternary structure
• has 4 polypeptide chains - each has a haem group - hv iron within them - where O2 binds
• each haemoglobin can carry 4 O2 molecules

Question 2

Affinity?

Answer 2

• the ability of haemoglobin to attract, or bind O2