Microbiology A single immunoglobulin molecule contains – A 1 light chain, 1 heavy c hain B 2 heavy chains, 1 light C 2 light chains, 2 heavy chains D 2 light chains, 1 heavy chain 💡 Explanation A single immunoglobulin molecule contains - ✓ Correct Answer: C. 2 light chains, 2 heavy chains