What purpose is served by cutting the onion into

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What purpose is served by cutting the onion into

Post by titan_79 » Thu Dec 15, 2005 12:16 am

What purpose is served by cutting the onion into
very small pieces??..... when you extract DNA from onions, why do we need to cut it to small pieces.

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Post by canalon » Thu Dec 15, 2005 2:44 am

Because it woould be much longer to "digest" a complete onion?

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cutting that union

Post by Jumpshooter » Thu Dec 15, 2005 3:40 pm

*In any biochemical analysis procedure you want to optimise the conditions for the assay. When you cut up your sample into very small peices you are Increasing the Number of Sample Particles which in turn increases the surface area for the chemical reagents to extract the DNA from. You will increase the amount of DNA that is extracted by grinding up the onion leaves into teeny tiney pieces.

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Post by Jessieh04 » Wed Dec 28, 2005 4:32 pm

I imagine it is kinda like squeezing orange juice out of an orange. You'll get more juice if you chop it up.
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Post by Poison » Wed Dec 28, 2005 7:11 pm

For increasing surface area.
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