Saturday, January 21, 2012

Movements in Cell

Types of  cell movements are diffusion, active transport, exocythosis and endocythosis. Diffusion itself is divided into 2 movements which are facilitated difusion and osmosis. And endocythosis consist of phagocythosis and pinocythosis. Below are the description of each movements.

Diffusion is a process in which cells become speciailzed in structure and function.


Osmosis is diffusion of water through a selectively permeable membrane

Facilitated Diffusion is movement of specific molecules across cell membranes through protein channels.

Active transport is energy-requiring process that moves material across a cell membrane against a concentration difference.

Endocytosis is a process by which a cell takes material into the cell by infolding of the cell membrane.

Phagocytosis is a process in which extensions of cytoplasm surround and engulf large particles and take them into the cell.

Pinocytosis is a process in which a cell takes liquid in from the surrounding environment.

Exocytosis is a process by which a cell releases large amounts of material.

my biology textbook is my source and I also use google to search for the images

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