Select all statements that correctly describe hemoglobin and myoglobin structure.

1/ Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron (Fe)(Fe) atom.

2/ Each hemoglobin molecule can bind four oxygen molecules; each myoglobin can bind one oxygen molecule.

3/ Molecular oxygen binds reversibly to the Fe(II)Fe(II) atom in heme.

4/ By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron.

5/ Each iron atom can form six coordination bonds. Two of these bonds are formed between iron and oxygen.

6/ Hemoglobin and myoglobin are heterotetramers.

7/ The heme prosthetic group is entirely buried within myoglobin.

I choose 1, 3,4,5 but it is not correct