NEET 2013 · Class 12

Biotechnology: Principles and Processes

During the process of isolation of DNA, chilled ethanol is added to

  1. (A)precipitate DNA
  2. (B)break open the cell to release DNA
  3. (C)facilitate action of restriction enzymes
  4. (D)remove proteins such as histones

The NCERT line that answers it

Verbatim line

Other molecules can be removed by appropriate treatments and purified DNA ultimately precipitates out after the addition of chilled ethanol.

Chapter
Biotechnology: Principles and Processes
Section
9.3.1 Isolation of the Genetic Material (DNA)
Page
10
Words matched
20 of 20

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states that purified DNA precipitates out after the addition of chilled ethanol, which directly matches the correct answer 'precipitate DNA' and distinguishes it from the other options.

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