Multiple choice general knowledge science & technology

Haemoglobin that causes the red color of blood in vertebrates is formed around Iron atom. What is the metal radical in Haemocyanin in blood of cockroaches?

  1. Cobalt

  2. Zinc

  3. Copper

  4. Aluminium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hemocyanin, found in arthropod blood including cockroaches, uses copper ions (Cu+/Cu2+) instead of iron to bind and transport oxygen. When oxygenated, copper turns hemocyanin blue, unlike the red color of iron-based hemoglobin. This color difference is why their blood appears blue-green.

Keep practicing — related questions