ANATOMY

Detailed explanation-1: -If the molecule can transport without the requirement of energy, then the movement is called passive transport. Diffusion, osmosis etc., are examples of passive transport. If the transport of materials is done by utilising energy, then the transport is called active transport.

Detailed explanation-2: -Passive transport is defined as movement of a solute from a region of high electrochemical potential on one side of the cell membrane to a region of lower electrochemical potential on the opposite side.

Detailed explanation-3: -Types of passive transport There is net movement of molecules from the outside to the inside of the cell until the concentrations are equal on both sides.

Detailed explanation-4: -There are three passive transportation methods-diffusion, facilitated diffusion and osmosis.

Detailed explanation-5: -No energy is needed from the cell for passive transport because it occurs when substances move naturally from an area of higher concentration to an area of lower concentration. Simple diffusion is the movement of a substance due to differences in concentration. It happens without any help from other molecules.