where can selectively permeable membrane be found in an animal cell?
360779
All membranes of the cell are selectively permeable-They would include the cell membrane (surround the whole cell), the nuclear membranes (inner and outer), the mitochondrial membranes (inner and outer), the smooth and rough endoplasmic reticulum, the Golgi apparatus, various vacuoles, lysosomes, and others.
281738
animal cell\ncell membrane - controls what moves in and out of the cell\ncytoplasm - the jelly like substance the organelles sit in\nnucleus - controls the actions of the cell\nlysosome - structure with digestive enzymes that break down wornout cells and debris\nvacuole - stores food, water, and wastes\nnuclear membrane/envelope - controls what moves in and out of the nucleus\nribosomes - synthesize and produce proteins\nendoplasmic reticulum - synthesizes materials and transports them to other parts of the cell\ngolgi body - packages and modifies materials and sends them to other cells\nchromatin - genetic information that tells the what to do\nnucleolus - knot of chromatin that produces ribosomes\nmitochondria - produces energy for cell\n\nPlant cell ( added on )\ncell wall - a rigid layer that gives shape and supports the cell\nchloroplasts - absorbs sunlight needed for photosynthesis
719837
Cells are colorless, so if we want to see them, we need to color them.\nMethylene blue basically stains membranes, so you can use it to distinguish one cell from the other, sometimes you can get a light stain in nucleus, but mainly stains external membranes in vegetable cells, the called cell wall (not present in animal cells)
967476
CELL MEMBRANE IS THE BOUNDARY BETWEEN IT'S CELL AND IT ENVIRONMENT
892154
It is semi-permeable and controls what substances enter and leave the cell. It allows certain substances such as amino acids, glucose, mineral salts, water etc to enter the cell and also allows other substances like enzymes or waste products (carbon dioxide, urea) to leave the cell. This helps to maintain a suitable environment in the cell for it to survive and carry out its functions properly.
734833
In electromagnetism:--- \n--------------------------\n, permeability is the degree of magnetization of a material that responds linearly to an applied magnetic field. Magnetic permeability is represented by the Greek letter μ. This term was coined in September, 1885 by Oliver Heaviside. \n\nIn SI units, permeability is measured in henries per metre, or newtons per ampere squared. The constant value μ0 is known as the magnetic constant or the permeability of vacuum, and has the exact value  N·A-2.\n\nSome materials, called ferromagnetic or ferromagnets, are highly magnetic by nature, relative to most materials. They are composed of a large number of very small magnetic units working together called domains. Domains are not always aligned, and they often act against each other to reduce the strength of the net magnetic field.\n\nin Biology:-\n--------------\npermeability means allowing every thing to pass through it. if it so, then everything will be out of the cell and there will be no existance for the cell so, the cell membrane will be semi permeable or selectively permeable means allows the permeability of only selective melecules to pass through it.\n\nA semipermeable membrane, also termed a selectively permeable membrane, a partially permeable membrane or a differentially permeable membrane, is a membrane which will allow certain molecules or ions to pass through it by diffusion and occasionally specialised "facilitated diffusion". The rate of passage depends on the pressure, concentration and temperature of the molecules or solutes on either side, as well as the permeability of the membrane to each solute.\n\nDepending on the membrane and the solute, permeability may depend on solute size, solubility properties, or chemistry. An example of a semi-permeable membrane is a lipid bilayer, on which is based the plasma membrane that surrounds all biological cells. Many natural and synthetic materials thicker than a membrane are also semipermeable. An example of this is the thin film on the inside of an egg.\n\nSemipermeable membranes mostly exist on cells and in one's digestive tract.\n\nVascular permeability ------ characterizes the capacity of a blood vessel wall to pass through small molecules (ions, water, nutrients) or even whole cells (lymphocytes on their way to the site of inflammation). Blood vessel walls are lined by a single layer of endothelial cells. The gaps between endothelial cells (cell junctions) are strictly regulated depending on the type and physiological state of the tissue.
778955
The cell membrane is a lipid bilayer made from phospholipids.  As a lipid, it is permeable to other lipids (e.g. steroid hormones) but not to polar molecules (e.g. potassium or glucose).  Polar molecules require various types of membrane proteins (e.g. potassium channels) or endocytosis (glucose) for absorption into the cell.  \n\nHope this is helpful for you.  Best wishes and good luck.
120491
As the name implies it is outer thin layer of a LIVING cell.In plant cells in addition to the cell membrane there is a cell wall,either of cellulose or lignin,which is the external most, protective covering.The cell membrane controls the entry and exits of molecules in side the LIVING cell from out side.The cell wall provides protection and gives shape to the cell, both living as well as dead.What we call wood is a collection of billions of dead plants cells that have strong lignified walls.\nAnimal cells lack a proper cell wall.\nOne can easily see a cell membrane with naked eyes. Take a hard boiled poultry egg. Gently crack and remove the outer SHELL which  is of calcium carbonate.Just on its inner side and coverig the WHITE of the egg ( which is now hard and firm) one is sure to find an extermely thin membrane.That is the CELL MEMBRANE! One can see it in afresh egg as well but for a first timer boiled egg is easier. Cell membrane is also called PLASMA MEMBRANE, as it forms the outer limits of the living cytoplasm of a cell.\nThe information above will make one believe that an egg is a cell. Yes it is true in all its aspects. It IS a CELL and since it has to survive out side the animal body, it is provided with a shell which is not a part of the cell.Poultry egg, or for that matter any egg is a cell. An ostrich's egg is the largest cell of all!.
854233
Basically the semi-permeable membranes and capillary beds carry out osmosis. Osmosis is the passive diffusion of water molecules from a higher water potential to a lower water potential. Water moves from an area with higher concentration of water to an area with less water until the concentration of water in both areas become equal. Semi-permeable membranes and capillaries have thin walls that allow the passage of water. Thus water can move according to its concentration across the membranes.
716904
The plasma membrane has been called an asymmetric fluid mosaic structure. Made from two leaflets of lipids that form a bilayer (see also Lipid Biosynthesis), it contains proteins that can span one or both layers or are peripherally attached to one face or the other. The components of the bilayer frequently move laterally into other regions of the membrane, making it appear more fluid than static. In addition, proteins on the extracellular face can be heavily glycosylated, giving the membrane asymmetrical characteristics.
233869
You're probably referring to the plasma membrane. The interior is hydrophobic, while the exterior is hydrophillic. The phospholipids can translocate horizontally within the bilayer, but can't cross from one layer to the other. So, the membrane behaves like a fluid.  See MIT's website for more info. the link is below
86313
Each cell is like a plastic bag filled with a spaghetti soup of all the different cell components. But it's a very special plastic bag, because it is permeable - water and friendly chemicals can pass through it, but bad guys get shut out. Rather like the firewall works (or should work!) when you're on the internet. The cell membrane is the plastic of the bag.\n\n:-)\nDC\nwww.tigerworld.tv
1094870
We have used the pH-dependent fluorochrome fluorescein-dextran (FD) to study the acidification of prelysosomal vacuoles (endosomes) and lysosomes isolated from cultured macrophages and fibroblasts. FD was internalized by pinocytosis under conditions that allowed its selective localization in endosomes (1- to 5-min pulse) or in lysosomes (5-min pulse, 30-min chase). Fibroblasts were also exposed to FD at 20 degrees C, at which temperature endosome-lysosome fusion is inhibited. Cells were homogenized and labeled organelles were separated by centrifugation in Percoll density gradients. The addition of ATP rapidly decreased the internal pH of both endosomes and lysosomes, as indicated by a decrease in fluorescence intensity. The pH gradient was dissipated by H+ ionophores and ammonium chloride. Acidification was not affected by inhibitors of the mitochondrial F1,F0-ATPase or the Na+, K, K+-ATPase and did not require permeant anions, Na+, or K+. Of the inhibitors tested, only N-ethylmaleimide prevented the ATP-dependent acidification of both compartments. These findings provide direct support for the existence of an acidic prelysosomal compartment that may be acidified via the same type of H+ pump believed to operate in lysosomes and secretory granules.
761384
Hi, you can find what you want at the following websites:\nhttp://en.wikipedia.org/wiki/Osmosis\nhttp://www.purchon.com/biology/osmosis.htm\nhttp://www.tvdsb.on.ca/westmin/science/sbi3a1/Cells/Osmosis.htm
773799
Cell walls surround the cell outside of the plasma membrane.  When water flows into the cell by osmosis, the cell swells until its membrane builds up pressure against the cell wall.  The cell wall prevents the cell from swelling and bursting in a hypotonic solution.
640410
the cell membrane is the outer part of the cell, its like the skin of it. it holds everything in the cell in place so it.
72954
The plasma membrane or the cell membrane is semi-permeable.Its function is to regulate the exchange of materials between the cytoplasm and extracellular fluid.