Cut pieces of beetroot do not leave the colour in cold water but do so in hot water. Explain.

(N/A) The cell membrane of beetroot cells acts as a semi-permeable barrier that prevents the leakage of pigments (betalains) at room temperature.
When placed in cold water,the membrane remains intact and the pigments stay within the cells.
However,when placed in hot water,the high temperature causes the denaturation of membrane proteins and increases the fluidity of the lipid bilayer.
This leads to the disruption of the cell membrane,making it permeable,which allows the red pigments to diffuse out of the cells into the surrounding water.