... at school with osmosis and we have to use a visking tube. The visking tubing is placed in a beaker and tested for starch and glucose to see if osmosis had taken place. But i Don't really understand. Please help. There seems to be some confusion here. Visking tubing IS used for osmosis experiments ... not sound like an osmosis experiment, a starch is not involved in osmosis. The experiment involving starch and glucose is usually to demonstrate the need for digestion. The visking tubing acts like a model gut. Put starch and glucose in it, and the glucose goes through into the surrounding water but ...

hard biology factors how do the following affect the rate of osmosis and why/how: · Light intensity- · Volume of solution- · Potato- · Potato mass- · Shape of potato pieces- · Time potato is left for- · Temperature light intensity and temp are linked- they increase the energy of the particles and ... of osmosis from solution to potato and maybe increasing the osmosis from potato to solution. the shape effects the surface area- the greater the surface area the greater the chance of osmosis occuring increasing the rate. Time - the greater time the potato left for the more likely osmosis is to ...

Osmosis Coursework for re-mark "I realised that whilst the small end of the potato was out of the solution, osmosis couldn't occur on that side. Leaving the skin of the potato on the side facing up rectified this as osmosis was hindered by the skin. This made the experiment fairer because some ... could not perform osmosis on one side. " Wouldn't it have been easier to just fill the tubes with solution and put a bung in the tube so that ALL the potato pieces would have been submerged all the time? This is better. I still find your first explanation of osmosis a little muddled, but it ...

Osmosis and Diffusion I need help to write up an experiment including Aim, Introduction, Hypothesis, method, results, analysis + further explanation for an experiment on OSMOSIS using a visking tubing and putting in the solutions - 5ml of 1% strach and 5ml of 1% amylase also what is the rest of the ... rest' of the procedure is because i have no idea what aspect of osmosis you are investigating - all you have told me is that it is something to do with osmosis and involves visking tubing! Visking tubing is used for lots of osmosis experiments and I need some clue as to what you are trying to find ...

osmosis Your osmosis theory is not quite right. You say "When the fluid is equal on both sides osmosis will stop" When the CONCENTRATION of both sides is equal, osmosis won't STOP, but an equal amount of water will be travelling in both directions. Osmosis is a two way process. When you say "water ... i.e. 4-5 solutions). Also, you don't have the actual concentrations of the sugar - this is poor science (though it may not be your fault if that was what you were provided with). Given these limitations, a C grade is the highest you are likely to get for this piece of work. osmosis- madiha.doc

osmosis in potatoes can you give me a brief introduction to osmosis in potatoes for a piece of coursework. is it any different to other osmosis? Osmosis is a biological process - it does not vary according to the type of plant. A good account of osmosis can be found at http://www.psionica.co.uk ...

Osmosis If you are doing a coursework on osmosis 1) What do you have to consider? 2)What will i write in my introduction and Conclusion 3) what does potatoe show us about osmosis? 1) You can consider a variety of factors. The usual investigation is to investigate the effect of different ... 2) Your introduction should give an explanation of what osmosis is and how it occurs. What you write vin your conclusion depends upon your results! 3)Potatoes are just an example of a readily available plant tissue that can be usede in osmosis investigations. From your question, it would appear that ...

... say "This could have been because the solution was not strong enough for osmosis to take place or, as it was a weaker solution, osmosis may have needed a longer period of time to take place over. " Osmosis ALWAYS takes place, its just that the concentrations on either side of the membrane ... is that you do not really understand osmosis or scientific methodology. I really think you need to doscuss this workj with your teacher, as there are a number of things you need to be taught and that can't be done via an email. Osmosis Coursework.doc

Osmosis There are a few problems with this write up, although the theory section is very thorough. Preliminary work should not just be 'trying out' the experiment - it should be testing something that you need to know in order to design your experiment. For example, in osmosis, you might test ... and so more osmosis would happen into the cell."There is not MORE osmosis - there would just be more water flowing into the cell. In your results section, I would leave out the 'water concentration' graph. it is not necessary, and is also incorrect in one respect, as concentration is not measured in ...