OBJECTIVE LIFE SCIENCE
APPLIED BIOTECHNOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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During DNA replication this enzyme is responsible for “unzipping” the DNA helix ____
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DNA helicase
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DNA polymerase
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RNA polymerase
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Amylase
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Explanation:
Detailed explanation-1: -Key enzyme involved in DNA replication, it is responsible for ‘unzipping’ the double helix structure by breaking the hydrogen bonds between bases on opposite strands of the DNA molecule.
Detailed explanation-2: -The unwinding of the double helix of DNA is caused by an enzyme called helicase, which breaks the hydrogen bonds holding the complementary base pairs together, creating two template strands of DNA ready to begin the next step of replication. The place where this enzyme ‘unzips’ the DNA is called the replication fork.
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