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What is the correct difference between DNA ligase and DNA helicase?

Answer and explanation

Correct answer: Ligase joins DNA fragments, whereas helicase unwinds the DNA double helix

DNA ligase joins broken DNA fragments or seals nicks by forming phosphodiester bonds. DNA helicase separates the two strands of the DNA double helix by disrupting hydrogen bonds. Option B incorrectly reverses their functions. Exam tip: remember that ligase performs ligation (joining), while helicase opens the helix.

Related tags

Dna LigaseDna HelicaseDna ReplicationEnzymesBiotechnologyLigase EnzymesPrinciples Of BiotechnologyClass 11 Mcq

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