Transport without energy (Passive Transportation.)Novel transport without using energy.Meaning of diffusion (Diffusion), diffusion is the process of moving particles of the substance from an area with a high concentration to a lower concentration. To distribute the particles of the substance on a regular basis. Within the scope of the particles of the substance can move freely when the concentration of the substance in both songboriwen. To stop the spread of the so-called point spread (Dynamic Equilibrium), the homeostasis of substance remain mobile with phaeronuphak intensity at the same locations when the substance spread out the pressure of the spread. (Diffusion Pressure, D.P.) is the pressure that makes the message spread. Is proportional to the concentration of the substance that was spread. Substances that have a high concentration is D.P. So what is the movement of the particle diffusion motion of high to low, from D.P. D.P. diffusion multiple methodologies.1. simple diffusion (Simple Diffusion) is spread through the lining cells by dissolved in the cell membrane. And through a hole or cavity of the cell membrane.Spread by melting in the tissue cells. Occur that would melt the surrounding cells into tissue cells. And then spread through the intermediary tissue cells within the cell. Substances soluble in fats such as type Al-steroid hormones is widespread Hall through the cell membrane.Diffusion through the cell membrane, hole or slot. (Pore or Channel), hole or gap of the cells caused by a protein molecule with a battery inserted in a layer of fat. As the molecules of water and small molecules to pass through. Substances that spread through this channel is mainly not soluble in fat. The negative charge is spread through better because there are prachubuak protein and, depending on the size of the message is that there is no charge, but there is a small hole, it will spread through the cell membrane, as well.Otmosit is the spread of water through membrane barrier (Membrane) by diffusion from the direction of the solution with a little concentration to the side with a lot of concentration. When the water is spread over the membrane bag packaging solution concentrated sealed, pressure around the bag makes it gloves (Turgid)-this is the pressure-pressure (Turgor Pressure; T.P.) spread throughout the water into the bag, T.P. and inspire resistance causes a slower diffusion of water.Rue ya till homeostasis of the cell as a system close to spread. When the spread of water into the cells, the cell-like otmosit to change the volume of the cell. The diffusion of water through a cell membrane Influence of cell volume changes. The thick cell wall of plant cells have a cell membrane fence strength. The quantity of water that spread into a cell, it is the volume of the cell walls. Unlike animal cells, the cell wall does not exist. The volume of the cell, and therefore vary the quantity of water that is absorbed through the lining cells. The cell must have a mechanism to control the volume of the cells by controlling the concentration of io with special mechanisms, Lam natang lieng io cell membrane naphan.
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