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What happen to the starch solution in the dialysis bag at the end of experiment?
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Was the membrane-tubing-permeable to starch?
I'm assuming this is in reference to an experiment where you put a starch in dialysis tubing, and then put iodine in surrounding solution. Dialysis tubing has a limit of roughly mwco (molecular weight cut off of 10,000). Iodine has a molecular weight of roughly 126, so it can pass through. On the other hand, starch is a polymer of 1000's of glucose molecules. Glucose (C6H12O6) has a molecular weight of roughly 180. 1000 * 180 = 180,000, so glucose cannot pass through the dialysis tubing. In this experiment you should see the sealed tubing turn purple-pinkish after the iodine diffuses through. The outside solution should remain the same color.
What will happen when starch is mixed with solutions?
In this scenario, the concentration of solutes (the glucose and starch) is higher inside of the dialysis tubing than it is outside. As such, water will diffuse (via osmosis) into the dialysis tubing causing it to swell.
Is potato starch a solution?
Starch is not a solution.
What would happen if you poured starch indicator solution into the cell and filled the beaker with starch and glucose solution?
Well what i think is that The water outside of the "cell" will change colors and not the "cell" :D
What is the color of the leaf at the end of the experiment that test for starch?
the color of the leaf become brown-black after the iodine solution was added.
What will happen if you add some amylase to a starch solution and test it after 5 minutes?
Amylase is an enzyme and contribute to the degradation of starch in simple sugars.
What will happen if you pour starch indicator solution into the cell and filled the beaker with starch and glucose solution?
The starch indicator solution will diffuse out of the bag (cell) into the beaker, changing the color of the starch solution to a blue, purple, or black color (assuming that it's iodine). The color of the indicator solution inside the bag will not change, because only the glucose can diffuse into the bag, but the starch cannot diffuse into the bag.
Which substances did not diffuse the membrane?
starch doesnt diffuse through the dialysis membrane.
How can you prove by experiment to show that starch is produced in the presence of sunlight?
Aim of an experiment to show that starch is produced in the presence of sunlight
Which substance did not diffused through the membrane?
starch doesnt diffuse through the dialysis membrane.
Why to destarch a plant?
a leaf (plant) should be destarched before photosynthesis investigations because the starch already present in the plant may mislead the result . hence if a destarched plant is used for the experiment then the amount of starch present at the time of the experiment will be nil and affter the experiment is compleded the amount of starch present in the leaves woul give the rate of photodynthesis as starch id prepared during photosynthesis
What is the role of IKI in the experiment?
to present the starch.
