NEET 2023 · Class 12

Biotechnology: Principles and Processes

In gene gun method used to introduce alien DNA into host cells, microparticles of metal are used. [NEET 2023]

  1. (A)Zinc
  2. (B)Tungsten or gold
  3. (C)Silver
  4. (D)Copper

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' which directly matches the correct answer option B, distinguishing it from all other options.

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Question text is reproduced from the published NEET 2023 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.