NEET 2019 · Class 12

Biotechnology: Principles and Processes

An enzyme catalysing the removal of nucleotides from ends of DNA is: [NEET OD 2019]

  1. (A)DNA ligase
  2. (B)Endonuclease
  3. (C)Exonuclease
  4. (D)Protease

The NCERT line that answers it

Verbatim line

Exonucleases remove nucleotides from the ends of the DNA whereas, endonucleases make cuts at specific positions within the DNA.

Chapter
Biotechnology: Principles and Processes
Section
9.2 Tools of Recombinant DNA Technology
Page
5
Words matched
19 of 19

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 'Exonucleases remove nucleotides from the ends of the DNA', which directly and conclusively answers the MCQ about an enzyme removing nucleotides from DNA ends.

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 2019 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.