Question

What is the difference between boundary of a onion cell and cheek cell

Answer 1

hmmm... i think an onion cell has sulpher and a cheek cell contains human cells when u cut an onion the onion cells break and the sulphur vapor escapes out.our eyes contains moisture so the sulphur vapour hits our eyes then it turns into sulphuric acid.whereas if u get hurt on ur cheek then u will only fell the pain nothing will happen 
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hope this is helpful......