Domande ufficiali di Biologia proposte dal Miur al test IMAT 2019-2020
Beetroot is a root vegetable with cells that contain a red pigment. Normally the pigment cannot pass out of the cells because it cannot diffuse through their cell surface membranes. An investigation was carried out into the effect of various chemicals on the permeability of the cell surface membranes of beetroot cells. 1 cmᶟ samples were cut from the beetroot and washed in running water for 20 minutes to remove any pigment that was released from the damaged cells. Five experiments were carried out. In each experiment, one cube of beetroot was placed in liquid P and one cube placed in liquid Q, and the results were observed.