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Iodine solution is usually used for starch test. It colors the cell blue-black if the starch is present. Onion does not have starch. Hence it will not turn blue-black when iodine solution is added. However it does have its use in staining the cell.
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∙ 8y ago
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∙ 11y agoit makes it clear but i dont knoow the nagatives is you use it. can someone help.
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∙ 13y agoIt makes it more clear due to the imprizlation of the onions marks becoming more visible.
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∙ 9y agoIodine dyes cells a purple color. This enables things to be seen easier under a microscope.
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∙ 9y agoWhen placed on onion cells, the iodine changes into blue black because of the presence of starch in the onion cells.
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∙ 8y agoIodine is absorbed by the internal parts of a cell and these organelles become visible with a microscope.
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∙ 10y agobla bla bla bla bla d ko ngarin alam ehh
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What does effect iodine have on the onion cells?
iodine stains the onion cells so that you can see the cell better. you can see the nuclei and cytoplasm.
What is the purpose of adding iodine solution to the onion cell?
to check the approximatedly amount of starch in it since starch in reaction with iodine a black purple colour is formed
When you added a drop of iodine what effect did it have on the cell?
It stains the cell, making it easier to observe under microscope.
How do you look for vacuole at onion cell through light microscope?
You should use iodine to stain the cells. Set the cells on a slide, let them dry you will repeat the process until it is completely covered in iodine and then you will slide it in the stage and then hopefully you will then see the sells of the onion skins.
What is a description of Onion cell?
describe onion cell
What does effect iodine have on the onion cells?
iodine stains the onion cells so that you can see the cell better. you can see the nuclei and cytoplasm.
Why you use iodine in onion?
Iodine stains the onion so it is easier to see the cellular features, such as the nucleus, cell wall, and cytoplasm.
What is the purpose of the iodine in the second slide of the onion cell?
No purpose
Why are cells stained with iodine solution?
Staining the onion epidermal cells with iodine will help in making the cells more visible when viewed under a microscope. It has no other effect on the cells.
What would happen if you added three drops of iodine to an onion?
I did this experiment and after a while the onion cell became incredibly easier to see.
Why do the cell walls of onions turn blue-black when put with iodine?
There is starch present within the onion cell which causes the black-blue color reaction when introduced to iodine.
How did the iodine affect the image of the onion cell?
Iodine dyes cells a purple color. This enables things to be seen easier under a microscope.
Why is iodine used when observing onion cells?
AnswerIodine was used to stain onion epidermal cells so you could see the cells more clearly and examine them. Naturally, the cell parts are difficult to see because they are clear.You put iodine on onion cells in order to make parts of the cell which were translucent, more visible. This is because iodine stains starch present in the onion cell.
How did the iodine solution affect the image of onion cell?
Iodine dyes cells a purple color. This enables things to be seen easier under a microscope.
What is the purpose of adding iodine solution to the onion cell?
to check the approximatedly amount of starch in it since starch in reaction with iodine a black purple colour is formed
When a onion cell is stained with iodine which organelles are you not able to see under a compound light microscope?
4.Nucleus
When you added a drop of iodine what effect did it have on the cell?
It stains the cell, making it easier to observe under microscope.
