alleryHaemoglobin is red because it contains:
AZinc atoms
BCalcium ions
CIron atoms
DCopper ions
Answer & Solution
Correct answer: C. Iron atoms
1. Haemoglobin is a coloured pigment in RBCs.
2. Its colour comes from the metal it holds.
3. That metal is iron.
_Source: syllabus Biology, Chapter 17, Breathing and Exchange of Gases._
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