Question

Identify the function of hemocyanin and the metal responsible for it.
(A) O2 transport and Fe (B) O2 transport and Cu
(C) electron transport and Fe (D) electron transport and Cu

Answer 1

(d) since arthopoda doesn't need o2 to be transferred by blood coz they have tracheal system for that

Answer 2

The function of hemocyanin and the metal responsible for  O2 transport and Cu.

Explanation:

Haemocyanins -

• It is the copper-containing hemocyanins which are proteins responsible for the binding, transportation, and storage of dioxygen within the blood of the invertebrates.
• They are respiratory proteins that use copper-binding sites which bind and transport oxygen in a variety of invertebrates.
• Hemocyanins, like hemoglobin, are multi-subunit molecules where each subunit of arthropods) or functional unit of a subunit (mollusks) binds oxygen.

• They have a copper ion at the active site which cycles between Cu(I) and Cu(II) and depending on whether or not oxygen is bound.
• Cu(I) is oxidized by oxygen and when O2 coordinates with the metal
• They are mainly are the oxygen-transporting metalloproteins in the hemolymph of blood.