NEET 2012 · Class 12

Biotechnology: Principles and Processes

For transformation, micro-particles coated with DNA to be bombarded with gene gun are made up of

  1. (A)silver or platinum
  2. (B)platinum or zinc
  3. (C)silicon or platinum
  4. (D)gold or tungsten

The NCERT line that answers it

Verbatim line

In another method, suitable for plants, cells are bombarded with high velocity micro-particles of gold or tungsten coated with DNA in a method known as **biolistics** or **gene gun**.

Chapter
Biotechnology: Principles and Processes
Section
9.2.3 Competent Host (For Transformation with Recombinant DNA)
Page
10
Words matched
29 of 29

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 'micro-particles of gold or tungsten coated with DNA' in the context of biolistics/gene gun, which directly matches option D and distinguishes it from all other options.

We did this for 1,565 questions.

Every one traced to the exact sentence in NCERT that answers it, including 90% of the 2026 paper. Sit a mock on the real NEET 2027 computer interface and every mark you drop comes back with its line attached.

Take the free 5-minute checkMore from this chapter

Question text is reproduced from the published NEET 2012 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.