what will happen if the pressure in spaces of cells increase?
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That is too vague a question. There will be different answers if you mean what will happen if a cell is placed in a liquid SOLUTION which has more of a specific substance than the cell. It will also be different if the solution you are talking about is simple air or only one gas.\nGenerally, however, the cell will attempt to balance the pressure within its membrane and outside its membrane in order to stop itself from exapnding so much it rips it self apart (There are only a certain number of lipids in the lipid bilayer of cells, and if the surface area of the cell increases too much, they will not be able to keept in contact with each other and therefore keep the membrane intact) or becomming squished because it cannot counter the outside pressure and is therefore forced to fold in upon itself.
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The turgid pressure of the water in the vascular tissues pushes against the cell wall, makeing the plant more rigid
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do you mean what processes cells must undergo? \n\nIf that's your question, then the processes would be cell division by mitosis (to produce more cells, so that organism can increase in size/length), cell elongation(this occurs mainly in plants via vacuolation and thus aids in increase in size and length) and cell differentiation(this allows genes to be switched on or off so that certain traits/phenotypes can be expressed, eg. gene that codes for blue eyes switched on for cell in the eye and not elsewhere like cell on the hand/feet). Hope this answers your question.
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Osmotic pressure or turgor (also called turgor pressure) is the pressure produced by a solution in a space that is enclosed by a differentially permeable membrane.\n\nWhen a biological cell is in a hypotonic environment (the cell interior contains a lower concentration of water than its exterior), water flows across the cell membrane into the cell, causing it to expand. The membrane (or, in plant cells, the cell wall) restricts the expansion, which causes an increase in pressure. The resulting pressure is called turgor. This pressure is what prevents more water from flowing into the cell, thus creating a pressure equilibrium between water flowing down the concentration gradient and the taut membrane pushing back. In this example, the equilibrium prevents the cell from ever becoming isotonic to its environment. Cells not adapted to hypotonic environments, with the flow of water into them but no strong membrane or cell wall, will burst. The osmotic pressure π of a dilute solution can be calculated using the formula\n\n pi = MRT\n \nwhere\n\nM is the molarity \nR is the gas constant \nT is the absolute temperature \nNote the similarity of the above formula to the ideal gas law, and also that osmotic pressure is not dependant on particle charge.
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From the interior of the lipid bilayer?  Because the interior is hydrophobic, and ions would tend to get in and get stuck, eventually probably gumming up the membrane.
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Given that water in an hypotonic environment would tend to enter the cell, causing it to swell, it would constitute an expanding force aiding cell´s growing. Think of a baloon when you blow air into it: it kindda grows.
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Cell division is a means of replacing worn out or dead cells.\nIf you're asking ;Why do cells divide?\nCouple of theories:\n1. Ratio of the size of the nucleus to the volume of the cytoplasm:\n    The nucleus controls the cell. When the cytoplasm gets too big   for nuclear control, the cell splits.\n2. Ratio of the volume of the cytoplasm to the surface area of the cell membrane: Materials are transported into and out of the cell through the cell membrane. If the cytoplasm gets too big, the cell membrane cannot take in enough needed materials. The cell splits, thus creating more cell membrane surface area.\nMathematically: As the radius of a spherical cell  increases from 1 to 2, the volume of the cell increases much more (I believe 8X more) than the surface.\nAdditional note: Cell division and growth are two different things.\nWhen a cell divides, you just have two cells, 1/2 the size of the original. Growth follows!
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Direct sunlight or elevated temperatures will increase the temperature of the gas inside the container and thereby increase the pressure.  Very high temperatures can increase the pressure until the container bursts.
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You better read something on this:\nhttp://en.wikipedia.org/wiki/Pressure
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An animal cell is normally as salty as its external solution. Animal cells do  not have cell walls so have no turgor pressure.  \nAn animal cell transferred from an isotonic to a hypertonic solution will  shrink as water moves out of the cell via osmosis.\nAn animal cell transferred from isotonic to hypotonic will gain water via  osmosis and swell. If the solution is dilute enough, the cell may burst  because it has no cell wall to prevent the cell membrane from stretching as the cell expands.\nTurgid and flaccid are terms that really only apply to cells with cell walls, such as plant cells. Animal cells may shrink or swell when placed in \nhypertonic and hypotonic solutions, respectively, but they never have turgor because the cell membrane is too weak. A cell wall is required for a cell to have a turgor potential.
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These answers are taken drectly from the listed link.  \n\nIn animal cells, being in a hypertonic environment results in crenation, where the shape of the cell becomes distorted and wrinkled as water leaves the cell. \n\nPlants thrive in hypotonic environments. Their cells have rigid cell walls that prevent bursting. In fact, the pressure of the cytoplasm against the cell wall keeps the plant from wilting and losing its shape.
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flask x- There will be a net influx of water to the blood cells because there a higher concentration of water outside the blood cells, the cell will expand.\nflask y- no net gain or loss of water to the cell. The cells are in equalibrium with the solution. Water will flow in and out, but at an equal rate so there is no net gain. \nflask z- there is a net efflux of water out of the cells  because there is a higher concentration of water in the cell than in the solution. as a result the cell will shrink.
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ok, so generally speaking, in the hypotonic environment, a cell is swell up, and potentially burst. The way to remember this is that hypO (the letter O)tonic is the cell which is normally drawn as a more squarelike shape becomes circular as it takes on water. In an isotonic solution, the environment and the cell have equal solutes so no movement of water occurs. In a hypertonic solution (lots of particles in the environment) so the water leaves the cell and shrivels up. \nHowever, we also have to take into account the type of cell that we are placing into these environments. The above applies to animal cells and paramecium as they don't have rigid cell walls. However, plant cells do have cell walls so it does not apply to them. Plant cells have what we call turgor pressor, so they can withstand the environmental influences, or changes in tonicity, alot better. When the plant takes on water, it has the cell wall to prevent bursting. When the plant cell looses water, the cytoplasm shrinks while the cell wall keeps the cell's shape.\n\nQuestion 2:\nIf you were to place elodea or paramecium from fresh to salt water:\nwhen elodea is placed in salt water, we observe the process of plasmolysis - shrinkage of cell contents due to water loss.\nfor image see:\nhttp://images.apple.com/education/solutions/iwork/lessons/media/RealWorldScienceSample.pdf\n\nWith Paramecium: it has 2 contratile vacuoles that are used to balance salt concentration by expelling water
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You are open to the absolute vacuum of space. Now if you understand vacuums the tighter it is the higher potential pressure on anything containing matter. Therefore when exposed to a vacuum all the fluids of your body will rapidly escape with the thin layers of flesh not even slowing them down. Think of a water balloon that has been overfilled.
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The fibers just get bigger, or become hypertrophied.  These larger fibers will also have more mitochondria for energy, store more glycogen, have more microfilaments and myofibrils in the fiber, and increased connective tissue between the fibers.
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As cells grow the surface area/volume ratio goes down.  This inhibits their ability to uptake nutrients.
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It's all about osmotic shock. The cells will trigger various pathways to cope with it and I'd guess they would have to spend some energy dealing with this problem instead of using it to grow.\nOsmoregulation can differ quite a lot depending on the species and nature of the shock (ionic solutes vs non ionic etc)\n\nYou should look in the literature through pubmed (and google).\nA review that might give you some guidelines is \n\nMICROBIOLOGY AND MOLECULAR BIOLOGY REVIEWS\nMar. 1999, p. 230–262 Vol. 63, No. 1\n\nOsmosensing by Bacteria: Signals and Membrane-Based Sensors\nJANET M. WOOD