1) The iron atom of the heme group is almost entirely enclosed within the protei

Question

1) The iron atom of the heme group is almost entirely enclosed within the protein. 2) By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron. 3) each iron atom can form six coordination bonds: Two of these bonds are formed between iron and oxygen. 4) Molecular oxygen binds reversibly to the Fe(II) atom in heme. 5) Hemoglobin and myoglobin are heterotetramers. 6) Each hemoglobin molecule can bind four oxygen molecules; each myoglobin can bind only one oxygen molecule.

Explanation / Answer

All except 3 and 5.

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