Biochemistry MCQ – 18 (Multiple Choice Questions in Biochemistry: Membrane Transport System)
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Simple Diffusion vs Facilitated Diffusion (Difference between Simple and Facilitated Diffusion)
Diffusion is the movement of particles from a region of higher concentration to a region of lower concentration. Based on the presence or absence of facilitator molecules, there are two types of diffusion processes. They are (1) Simple Diffusion and (2) Facilitated Diffusion.
(1). Simple Diffusion: Here the diffusion occurs without the aid of an intermediary molecule such as channel proteins or carrier molecules.
(2). Facilitated Diffusion: Facilitated diffusion is the process of spontaneous transport of molecules or ions across a cell’s membrane via specific trans-membrane proteins.
The present post discusses the Difference between the Simple and Facilitated Diffusion Process.
Difference between Simple Diffusion and Facilitated Diffusion
Diffusion vs Osmosis (Difference between Diffusion and Osmosis)
Diffusion and Osmosis are the two methods in membrane transport by which the movement of materials in and out of the cell takes places.
Diffusion: Diffusion is the movement of particles from a region of higher concentration to a region of lower concentration. Example: When a scent-bottle is opened in a room, quickly the fragrance will spread to the entire room by diffusion of the molecules through the air.
Osmosis: Osmosis is a type of diffusion in which the solvent molecules move into the solution through a semi-permeable membrane. Example: Plasmolysis of a cell when it is placed in a sugar or salt solution.