Q5 of 30 Page 1

Which main technique and instrument is used to isolate DNA from a plant cell?

Centrifugation is the technique used to extract or to isolate DNA from any plant cell and the instrument used to isolate DNA is called as centrifuge. Centrifugation is done to separate minute and distinct particles by using the centrifugal force in a well-closed container.


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3

“Pranay suffered from measles at the age of 10 years. There are rare chances of his getting infected with the same disease for the rest of his life.” Give reason for the statement.

 4

Give the name of the carcinogenic dye which is used to stain gel to make the DNA visible under UV light.

 6

How is the action of normal endonuclease enzymes different from that of restriction endonucleases?

 7

‘Eutrophication’ is the natural aging of a lake. Mention another feature which defines this term.