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Q: Which step happens first in DNA replication A.Protein is formed from the DNA. B.The DNA is checked for errors. C.The replication fork forms. D.Base pairs are broken apart.?
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What happens first in DNA replication?

base pairs are broken apart


What happens after the hydrogen atoms are broken?

The enzyme helicase " unzips " the double helix in preparation for replication.


Which step happens first in DNA replications?

The first thing that happens is a replication structure binds to the DNA molecule. This is usually a signalling molecule or some type of protein. Next, this replication structure attracts DNA helicase enzymes which "unzip" the double stranded helix.


Snowblower is not blowing snow - I checked the shear pins - ok - what now?

check for stretched or broken auger belt


What type of chemical bond is broken during the first step of replication?

Helicases must break the hydrogen bonds between paired nucleotide bases (Thymidine-Adenosine or Guanosine-Cytosine) of DNA strands so the two strands can be separated and replicated. The origins of replication, the initial "replication bubbles", tend to be in sequences that are A-T rich because Adenine-Thymidine has only two hydrogen bonds, energetically easier for helicases to start breaking than the three hydrogen bonds between Guanosine-Cytosine. For replication to continue topoisomerases must also cut the phosphate backbones of DNA strands, otherwise the helically wrapped strands would get much too overwound or "supercoiled" for polymerases and related replication machinery to continue to function. Nucleosomes (complexes of histone proteins that DNA wraps around) also have to be rearranged or removed to allow for replication.

Related questions

What happens in DNA replication?

Base pairs are broken apart.


Which happens first in DNA replication?

(Apex) Base pairs are broken apart.


What happens first in DNA replication?

base pairs are broken apart


What happens after the hydrogen atoms are broken?

The enzyme helicase " unzips " the double helix in preparation for replication.


What bond have to be broken in order for DNA replication to occur?

hydrogen bonds


Why is replication a necessary step in cell divisio?

to fix thing that is not broken


Which step happens first in DNA replications?

The first thing that happens is a replication structure binds to the DNA molecule. This is usually a signalling molecule or some type of protein. Next, this replication structure attracts DNA helicase enzymes which "unzip" the double stranded helix.


What type of bonds are broken during the unwinding stage of replication?

hydrogen in bases


If you hit your hand of a door is it broken or sprained?

It could be either sprained or broken, if in doubt get it checked.


How are the rungs of the DNA ladder broken as the DNA molecule unzips?

The rugs of DNA are Adenine, Guanine, Cytosine, and Thymine. When DNA replication occurs and the ladder has to be broken, an enzyme called "helicase" starts at the replication fork and unwinds the DNA ladder. Helicase breaks the rugs of DNA.


What bonds are broken in order the unzip the DNA strands?

The hydrogen bonds are broken in order to unzip the DNA strand. This all occurs during the DNA replication process.


What happens when you leave a bone broken?

Its left broken.