. The pair in which both species have iron is:

(a) nitrogenise, cytochromes

(b) carboxypeptidase, haemoglobin

(c) haemocyanin, nitrogenase

(d) haemoglobin, cytochromes

Best Answer

Answer : (d)

Solution:Nitrogenase contain nitrogen.

Cyctochromes contain iron

Carboxypeptidase contain carbon, nitrogen

Haemoglobin contain iron

Haemocyanin contain copper

So, haemoglobin and cytochrome contain iron.

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