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What happens to a sugar particle inside a visking tubing and water particles outside?
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What will and won't pass through a visking tube?
Cannot pass through visking tubing: sugar starch lactose sucrose Can pass through visking tubing: Iodine Glucose Maltose
What part of body does the water represent in visking tube?
small intestine
How does a visking tubing differ from a cellmembrane?
Visking tubing contains millions of tiny holes which only let small molecules, like water, diffuse through. Large molecules, such as starch, cannot cross the membrane. We say it is partially permeable (permeable means a substance is able to pass through). This is similar to a cell membrane. Visking tubing can therefore be used as a model of a cell.
How does visking tube work?
small intestines and the blood that surrounds in (ie in the capillaries)
Why it was important to wash the outside of the visking tubing?
it needs to dry
Why must rinse the outside of the Visking tubing thoroughly with water?
so as to prevent contamination. that should be one point.
Where to find visking tube?
Visking tubing is made of cellulose and often used as a model gut in class room experiments.
What will and won't pass through a visking tube?
Cannot pass through visking tubing: sugar starch lactose sucrose Can pass through visking tubing: Iodine Glucose Maltose
Can starch pass through visking tubing?
We supply Visking tubing and offer the following information: The molecular weight cut-off of this product is 12000 - 14000 daltons. This means in theory that molecules larger in MW than this will not pass through the membranes and ones smaller will. Starch has a very high molecular weight and the tubing is often used to illustrate the effect of enzymes breaking starch down into to simple sugars. Starch therefore should not pass through the membrane wall. The user of this product should be aware that this is a nominal cut-off and long thin molecules above the 14kd cut-off may go through and globular molecules below may be retained. In addition the charge on a molecule may effect the rate of transfer across the membrane.
How can you use a visking tube to test the hypothesis that osmosis happens faster at higher temperatures?
Put a sucrose solution into the visking tube and fasten the ends, then place it in water (at different temperatures). The varying temperatures would quicken or slow the rate of diffusion (osmosis). Then using iodine, you put some in the water that the visking tube was in and if it turns dark blue/black the more sucrose has diffused. This can be put into a calorimeter to check the intensity for different temps. You should find that the higher the temp. the higher the rate of diffusion (because particles are excited and have more kinetic energy and move more). Hope this helps =) Sana (17 yrs)
Can glucose pass through visking tube?
fine glucose molecules can pass through the wall of the visking tube.
What is a type of tube that is semi-permeable?
visking tubing
Can salt pass through visking tubing?
yes it can
What is visking tubing?
Visking tubing is a kind of seamless semi permeable tubing, a cellulose tubing, that is made of regenerated cellophane. It is used as an edible casing for sausages or as a membrane in dialysis.
What is a detailed explanation of how the visking model is good or bad?
can someone tell me what is good about visking tube and whats bad about it asap because i need to give my homework by tmor and my homework relates 2 that
What part of the human body acts a the visking tubing?
capillaries in the villi
