Diffusion is used to explain that the spread of particles in random motions from areas of higher
concentration to area of lower concentration. (http://en.wikipedia.org/wiki/Diffusion). Facilitated diffusion is a kind of passive transport that gives permission for substances to cross the membrane with the help of special transport proteins. (http://biology.about.com/od/cellularprocesses/ss/diffusion_2.htm). Active transport is when the cells move the materials in opposite directions that is against the concentration gradient and energy is used in this process. (http:www.biologycorner.com/bio1/active.html). Endocytosis is the process where a cell takes material in the cell by infolding the cell membrane. Exocytosis is the process where a cell releases a huge amounts of material. (both from Biology:Prentice Hall Textbook). Osmosis is the movement of water through selective permeability (Biology textbook).
concentration to area of lower concentration. (http://en.wikipedia.org/wiki/Diffusion). Facilitated diffusion is a kind of passive transport that gives permission for substances to cross the membrane with the help of special transport proteins. (http://biology.about.com/od/cellularprocesses/ss/diffusion_2.htm). Active transport is when the cells move the materials in opposite directions that is against the concentration gradient and energy is used in this process. (http:www.biologycorner.com/bio1/active.html). Endocytosis is the process where a cell takes material in the cell by infolding the cell membrane. Exocytosis is the process where a cell releases a huge amounts of material. (both from Biology:Prentice Hall Textbook). Osmosis is the movement of water through selective permeability (Biology textbook).
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