transport-across-cell-membrane

Exocytotic Transport

Fri, 24 Apr 2009 08:27:20 +0100

Receptor Mediated Endocytosis

Fri, 24 Apr 2009 08:23:48 +0100

Receptor Mediated Endocytosis: Process

Fri, 24 Apr 2009 08:21:21 +0100

After the binding of a ligand to plasma membrane spanning receptors, a signal is sent through the membrane, leading to membrane coating, and formation of a membrane invagination
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The receptor, its ligand, and anything nearby are then internalised in sub-micrometre sized clathrin-coated vesicles. Once internalised, the clathrin-coated vesicle uncoats (a pre-requisite for the vesicle to fuse with other membranes) and individual vesicles fuse to form the early endosome. Since the receptor is internalized with the ligand, the system is saturable and uptake will decline until receptors are recycled to the surface.

Phagocytosis By Macrophages

Fri, 24 Apr 2009 08:12:56 +0100

Phagicytosis Classical Model

Fri, 24 Apr 2009 08:10:01 +0100

Phagocytosis and Chemo

Fri, 24 Apr 2009 08:07:35 +0100

Phagocytosis

Fri, 24 Apr 2009 08:11:41 +0100

Phagocytosis is the cellular process of Phagocytes and Protists of engulfing solid particles by the cell membrane to form an internal phagosome ,which is a food vacuole, or pteroid.

Phagocytosis is a specific form of endocytosis involving the vesicular internalization of solid particles, such as bacteria, and is therefore distinct from other forms of endocytosis such as pinocytosis, the vesicular internalization of various liquids. Phagocytosis is involved in the acquisition of nutrients for some cells, and in the immune system it is a major mechanism used to remove pathogens and cell debris. Bacteria, dead tissue cells, and small mineral particles are all examples of objects that may be phagocytosed.

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Thu, 23 Apr 2009 04:29:11 +0100

Action Potential

Thu, 23 Apr 2009 04:20:10 +0100

Sodium Pottasium Pump Rexplained

Thu, 23 Apr 2009 04:18:55 +0100