Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET 2004
Exam
NEET
Year
2004
Subject
Zoology
Chapter
Biotechnology - Principles and Processes

NEET 2004 · Zoology · Biotechnology - Principles and Processes

Restriction endonucleases:

Restriction endonucleases:

Options

  1. Aare present in mammalian cells for degradation of DNA when the cell dies
  2. Bare used in genetic engineering for ligating two DNA molecule
  3. Care used for in vitro DNA synthesis
  4. Dare synthesized by bacteria as part of their defense mechanism.

Correct answer

D. are synthesized by bacteria as part of their defense mechanism.

Step-by-step solution

Restriction enzymes are degradative enzymes which recognizes and cuts up DNA that is foreign to a cell. These enzymes protect bacteria against intruding DNA from other organisms such as virus or other bacterial cells. Related Theory Restriction endonuclease cuts DNA atspecific site, where complementary DNA binds. Multiple restriction enzyme increases the specificity of DNA binding sites, giving more reliable results.
Practice Biotechnology - Principles and Processes on Quantrex Academy →

More from Biotechnology - Principles and Processes

During PCR, primers bind to the DNA strands in the __________ step. NEET 2026Given below are two statements : one is labelled as Assertion A and the other is labelled… NEET 2026Which of the following statements are not true regarding restriction endonucleases ? A.… NEET 2026Which of the following statements are correct with respect to DNA separation, isolation… NEET 2026Match List I with List II : List I List II A. Genetically modified organism I.… NEET 2026In the above represented plasmid, an alien piece of DNA is inserted at EcoRI site. Which… NEET 2025Given below are two statements : Statement I: The DNA fragments extracted from gel… NEET 2025Which of the following cannot be used for direct gene transfer? AIIMS 2019 Full Biotechnology - Principles and Processes list All NEET PYQs