B the asthenosphere and lithosphere
So, Helicases are enzymes that bind and may even remodel nucleic acid or nucleic acid protein complexes.
It unwinds the DNA.
Explanation:
DNA is double stranded. Enzymes that are responsible for replication of DNA can only bind to a single strand of DNA.
So the answer is... A it breaks apart the bases.
The cyclin begins to be destroyed at the metaphase of the cell cycle causing the chromosomes to begin to seperate.
Small swellings that are found at the terminal ends of axons.
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