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Classification For the Following Questions, Match the Enzyme Involved in DNA

Question 32

Matching

Classification
For the following questions, match the enzyme involved in DNA replication with its function.

Premises:

Responses:

Tethers DNA polymerase to the template DNA

DNA polymerase I

Main enzyme that extends RNA primer by adding DNA nucleotides to it

DNA ligase

Unwinds DNA helix

sliding clamp

Stabilizes single-stranded DNA

primase

Relieves over-winding of DNA ahead of the replication fork

single-stranded binding proteins

Synthesizes short RNA segment to initiate new DNA strand

DNA polymerase III

Contains 5' ->3' exonuclease activity to remove RNA preceding previous Okazaki fragment and uses its 5' ->3' polymerization activity to replace RNA nucleotides with DNA nucleotides

helicase

Seals nicks between adjacent DNA segments

topoisomerase

Premises:

Tethers DNA polymerase to the template DNA

Main enzyme that extends RNA primer by adding DNA nucleotides to it

Unwinds DNA helix

Stabilizes single-stranded DNA

Relieves over-winding of DNA ahead of the replication fork

Synthesizes short RNA segment to initiate new DNA strand

Contains 5' ->3' exonuclease activity to remove RNA preceding previous Okazaki fragment and uses its 5' ->3' polymerization activity to replace RNA nucleotides with DNA nucleotides

Seals nicks between adjacent DNA segments

Responses:

DNA polymerase I

DNA ligase

sliding clamp

primase

single-stranded binding proteins

DNA polymerase III

helicase

topoisomerase

Correct Answer:

Premises:

Responses:

Tethers DNA polymerase to the template DNA

Main enzyme that extends RNA primer by adding DNA nucleotides to it

Unwinds DNA helix

Stabilizes single-stranded DNA

Relieves over-winding of DNA ahead of the replication fork

Synthesizes short RNA segment to initiate new DNA strand

Contains 5' ->3' exonuclease activity to remove RNA preceding previous Okazaki fragment and uses its 5' ->3' polymerization activity to replace RNA nucleotides with DNA nucleotides

Seals nicks between adjacent DNA segments