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There is starch present within the onion cell which causes the black-blue color reaction when introduced to iodine.

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Q: Why do the cell walls of onions turn blue-black when put with iodine?
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Do onoin epidermal cells have cell walls?

Yes. All plants have cell walls, this includes onions. I think it is because it makes the plants themselves stronger but I'm not sure about the explanation, all I know is that plants' cell's have cell walls.


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No, there are no cell walls in animal cell.


What is the cell walls function for a animal?

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Does plants or animals have cell walls?

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Do viper snakes have cell walls?

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Which cell structure was visible when elodea leaf cell wet mount was examined with the compound light microscope?

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What animal has a cell wall?

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What do cell walls do in a cell?

they protect the cell from damage. only plant calls have cell walls.


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