THE MOLECULAR BASIS OF INHERITANCE
THE SEARCH FOR INHERITABLE MATERIAL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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DNA Helicase
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DNA Polymerase
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DNA Ligase
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RNA Polymerase
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Detailed explanation-1: -Helicase is the first replication enzyme to load on at the origin of replication 3. Helicase’s job is to move the replication forks forward by “unwinding” the DNA (breaking the hydrogen bonds between the nitrogenous base pairs).
Detailed explanation-2: -During DNA replication, an enzyme called DNA helicase “unzips” the molecule of double-stranded DNA.
Detailed explanation-3: -Helicases are enzymes that use ATP-driven motor force to unwind double-stranded DNA or RNA.
Detailed explanation-4: -DNA helicases catalyze the disruption of the hydrogen bonds that hold the two strands of double-stranded DNA together. This energy-requiring unwinding reaction results in the formation of the single-stranded DNA required as a template or reaction intermediate in DNA replication, repair and recombination.