Biology

Biology, 30.06.2019 08:30, Nevaeh3700

The separated strands of dna are completed into two double helixes by dna a. helicase b. polymerase

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Biology, 28.06.2019 23:30, xbeatdroperzx

What role does helicase play in dna replication? a.helicase bonds together pieces of dna as new strands form. b.helicase connects the floating nucleotides to the template strands. c.helicase breaks the hydrogen bonds and unwinds a section of dna. d.helicase checks the base pairs in each new strand of dna.

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Biology, 30.06.2019 08:30, KaylaMaria

The separated strands of dna are completed into two double helixes by dna helicase polymerase

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Biology, 23.07.2019 16:00, blackbetty79

Dna replication involves several steps. first, the enzyme, helicase, unwinds the hydrogen bonds of the dna double helix. then dna polymerase attaches the complementary nucleotides thereby creating two semi-conservative strand of identical dna. semi-conservative replication of dna refers to the idea that dna molecules need to unwind before duplication can begin. each new dna molecule contains two new single rna strands. the identical two strands of dna molecules run in opposite directions. two identical dna strands contain part old and now part new nucleotides.

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Biology, 07.10.2019 18:30, DraeDrae138

The initiation of transcription requires melting of the dna double helix, i.e. separating hydrogen-bonded base pairs, immediately upstream of the +1 site. how is this melting accomplished in e. coli? a. bases at the promoter region flip outward from the double helix into pockets on the polymerase. b. dna helicase first unwinds the double helix around the +1 site. c. rna polymerase gets the energy to cause separation of strands from atp hydrolysis. d. topoisomerase first returns the linking number to lk0. dnaa: atp complexes bind to and twist the double helix at the +1 site.

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