Question : (a) Name one process by which materials are exchanged through plasma membrane without the expense of energy. (b) Name one process which involves expense of energy for the transport of materials across the plasma membrane.

Question : (a) Name one process by which materials are exchanged throu

1.	Question : (a) Name one process by which materials are exchanged through plasma membrane without the expense of energy. (b) Name one process which involves expense of energy for the transport of materials across the plasma membrane.
Answer» SOLUTION :(a) OSMOSIS (B) ACTIVE TRANSPORT.