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Which is the correct matching between ligase and helicase?

Answer and explanation

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

Ligase joins broken DNA fragments by forming phosphodiester bonds, for example while joining Okazaki fragments. Helicase uses ATP energy to separate the two strands of the DNA double helix. Therefore, option A is correct. In option B, the functions of the two enzymes are interchanged. Exam tip: remember that helicase opens DNA, whereas ligase joins DNA pieces.

Related tags

Ligase EnzymeHelicase EnzymeDna ReplicationOkazaki FragmentsBiotechnology EnzymesLigase EnzymesPrinciples Of BiotechnologyBiotechnology

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