Complete the following sentences about heme by moving the terms to the correct targets some terms will not be used.

the prosthetic group of hemoglobin and myoglobin is

the organic ring component of heme is

under normal conditions, the central atom of heme is

in the central iron atom is displaced 0.4 a out of the plane of the porphyrin ring system.

the central iron atom has bonds: to nitrogen atoms in the porphyrin, one to a residue and one to oxygen

The completed sentences are given below.

Explanation:

Haemoglobin is a complex protein consists of heme and globin. Heme contains iron as central element.

The prosthetic group of hemoglobin and myoglobin is heme.  

The organic ring component of heme is porphyrin.

Under normal conditions, the central atom of heme is Fe²⁺.

In deoxyhemoglobin the central iron atom is displaced 0.4 A out of the plane of the porphyrin ring system.

The central iron atom has 6 bonds: 4 to nitrogen atoms in the porphyrin, one to a histidine residue and one to oxygen