If human blood is placed in a 2% detergent solution, what will happen to the RBC?

When human red blood cells (RBCs) are placed in a 2% detergent solution, they undergo lysis. Detergents are amphiphilic molecules consisting of a long hydrocarbon chain and a charged ionic end [3]. The primary mechanism of action involves the disruption of the cell membrane's lipid bilayer. Because the RBC membrane is composed of lipids and proteins, the detergent molecules interact with these components, solubilizing the membrane lipids and forming mixed micelles [3]. This structural breakdown compromises the membrane's integrity, leading to the release of intracellular contents, a process specifically known as hemolysis or lysis. Unlike osmosis in hypotonic solutions where cells might swell and burst due to water pressure, detergents chemically dissolve the protective boundary of the cell, making 'lyse' the most accurate description of the biochemical destruction occurring.

Sources

1. [1] Science , class X (NCERT 2025 ed.) > Chapter 4: Carbon and its Compounds > Activity 4.12 > p. 76
2. [3] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 7: Particulate Nature of Matter > Ever heard of ... > p. 111