Question

How many amino acid molecules form a molecule of haemocyanin (hemocyanin), a blood pigment of snails?

• A. 68
• B. 72
• C. 4500
• D. 3400

Answer 1

The correct option is D 3400

Haemocyanin is a protein which transports O${}_2$ in the bodies of some invertebrates. Haemocyanin protein is found only in mollusca and arthropoda.

A haemocyanin gene from Sepiella mainsroni was identified and had 3400 amino acids in structure.

So the correct answer is D.