AP BIOLOGY

Detailed explanation-1: -Helicases are enzymes that bind and may even remodel nucleic acid or nucleic acid protein complexes. There are DNA and RNA helicases. DNA helicases are essential during DNA replication because they separate double-stranded DNA into single strands allowing each strand to be copied.

Detailed explanation-2: -Helicases are involved in virtually all cellular processes that involve DNA and RNA. Their claim to fame, though, is unwinding DNA so it can be copied during cell division.

Detailed explanation-3: -In this paper, we study the mechanism of DNA unwinding by bacteriophage T7 helicase that is involved in DNA replication. During replication, the helicase has to unwind a long stretch of DNA, and that requires the helicase to couple strand-separation activity to translocation.

Detailed explanation-4: -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.