Assessment
*961 Ft
Relources
Mint
(2300
Question 1 of 13
Which of the statements about hemoglobin and myoglobin stracture are true?
◻ Each hemoglobin or myoglobin molecule can bind four orygen molecules.
◻ Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron (Fe) atom.
◻ Bach iron atom can form six coordination bonds and coe of these bonds is fermed between iren and oxypen.
◻ By itself, heme is not a zood exygen carrier. It mast be part of a larger protein to prevent osidation of the iron.
◻ Molecular corygen binds irreversibly to
Fe^(2 ) in heme.
◻ Hemsglobin is a heterotetramer, ahereas myoglobin is a mosomer.
◻ The heme prosthetic group is located in a hydrophoble cleft in the peotein, with propionate (peopanoate) groups exposed at the surface.