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Biology 14 Online
OpenStudy (aaronandyson):

A sugar solution kept in a test tube is pot in a jar of water witha piece of parchment paper at the buttom of the jar. A.Name the process. B.Define the above process C.What would you observe in the experiment setup after an hour or so? D.What control experiment can be setup for comparisons E.Keeping in mind the root hair , cell and its surrounding name the parts the correspond to conc sugar solution , parchment paper and the jar containing the water. F.Name any 2 other substances that can be used instead of the parchment paper in the above experiment G.Name 2 advantages of the proces

OpenStudy (aaronandyson):

@Somy

OpenStudy (aaronandyson):

@Somy

OpenStudy (somy):

what do you think here key word here is ' parchment paper '

OpenStudy (aaronandyson):

???????

OpenStudy (aaronandyson):

@Somy

OpenStudy (aaronandyson):

@Kainui

OpenStudy (somy):

Alright i just know that parchment paper is cellulose based

OpenStudy (somy):

and in plant cells we have cellulose cell wall

OpenStudy (aaronandyson):

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OpenStudy (somy):

hmmm i wonder if the this experiment is checking permeability of cellulose cell wall

OpenStudy (somy):

EXPERIMENT 6 Aim, To determine what takes place when a sugar solution and water are separated by a permeable mem- brane, such as pig's bladder or a piece of parchment. Method. A piece of pig's bladder or parchment is soaked in water, then tightly stretched over the mouth of a long-stemmed thistle-funnel and tied on with thin string. The stem of the thistle-funnel is then held obliquely while golden syrup or a strong sugar solution is poured into the funnel until the bulb is full. If syrup is used it must be warmed so that it can flow down the tube easily, but it must not be made hot enough to injure the bladder. Syrup is easier to use than a sugar solution, as the latter may crystallize out if it is too strong. When the bulb is full the thistle- funnel is fixed in an erect position by means of a clamp and retort- stand, and the level of the syrup is marked with a strip of gummed paper. The bulb is then suspended in a beaker of water in such a way that the level of the water in the beaker is the same as that of the solution in the thistle-funnel (Fig. 4). Observations. The liquid in the tube begins to rise and continues so to rise for some considerable time. Finally a maximum height is reached; and then the level of the liquid in the tube gets gradually lower. Meanwhile the water in the basin gets sweet. Inferences. The sugar must, in some way, have attracted the water through the bladder, and this with so much force that the liquid was able to rise in the tube against the force of gravity. i found similar experiment

OpenStudy (somy):

maybe can help but i dont seem to even get a good picture of this experiment in my head

OpenStudy (aaronandyson):

Thanks anyways.

OpenStudy (aaronandyson):

Can you help me more anyways?

OpenStudy (somy):

yeah if i can, i will

OpenStudy (anonymous):

@AaronAndyson Can you double check that the description of the setup is is 100% the same in the question you posted when compared to the question as given to you?

OpenStudy (anonymous):

In the mean time, the parchment paper is a semi-permeable membrane and sugars are a large molecular that cannot passively move through the membrane.

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