Exams › NEET › Biology

Match the following enzymes with their functions: Column-I (A) Restriction endonuclease (B) Restriction exonuclease DNA (C) DNA ligase (D) Tag polymerase Column-II (i) Joins the DNA fragments (ii) Extends primers on genomic template (iii) Cuts DNA at specific position (iv) Removes nucleotides from the ends of DNA Select the correct option from the following:

1. (a) (A)-(ii), (B)-(iv), (C)-(i), (D)-(iii)
2. (b) (A)-(iii), (B)-(i), (C)-(iv), (D)-(ii)
3. (c) (A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)
4. (d) (A)-(iv), (B)-(iii), (C)-(i), (D)-(ii)

Correct answer: (c) (A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)

Solution

Restriction endonucleases cut DNA at specific internal recognition sites, while restriction exonucleases remove nucleotides from DNA ends. DNA ligase seals DNA fragments together, and Taq polymerase extends primers during DNA synthesis.

Related NEET Biology questions

• The sequence that controls the copy number of the linked DNA in the vector, is termed:
• For transformation, micro-particles coated with DNA to be bombarded with gene gun are made up of:
• Biolistics (gene-gun) is suitable for:
• PCR and Restriction Fragment Length Polymorphism are the methods for:
• Which one is a true statement regarding DNA polymerase used in PCR
• The separated DNA fragments can be visualised only after staining the DNA with Ethidium bromide followed by exposure to UV radiation.

⚔️ Practice NEET Biology free + battle 1v1 →