Question

write short note on selective permeability

Answer 1

It determine with plants as cell membrane of a plant act like a sentry ,only allowing oxygen to flow through and let wastes go out of it.Which is known as selective permeable or selectively permeable

Answer 2

Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. This is important for the cell to maintain its internal order irrespective of the changes to the environment. For example, water, ions, glucose and carbon dioxide may need to be imported or exported from the cell depending on its metabolic activity. Similarly, signaling molecules may need to enter the cell and proteins may need to be released into the extracellular matrix. The presence of a selectively permeable membrane allows the cell to exercise control over the quantum, timing and
rate of movement of these molecules.