Sister chromatids are identical copies of a single, duplicated chromosome. Inside a
chromosome, there is DNA that is coiled.The histones are the proteins where DNA is wrapping
over it and to form a chromatin fiber. When it unravels it reaches a dna that is a double helix
structure where each strand has a backbone. There are two enzymes, the helicase and the
topoisomerase. The topoisomerase relaxes the supercoiled DNA ahead of the replication fork
so the replication can continue to occur. The helicase enzyme is responsible for separating the
two strands of the double helix. Primase is an enzyme involved in DNA replication that helps to
synthesize short RNA primers that is the starting point. If they want to construct a DNA strand,
the primase indicates the polymerase where to start adding new nucleotides. They continue this
process until the DNA molecule is replicated.
This cell is called the eukaryotic cell. Inside the cell it had the nucleus and the ribosome.Since
the Dna can’t leave the nucleus, through the DNA it generates the rna that contains the
information that one wants to generate as a protein and that is denominated as mRNA. The
mRNA goes through a RNA processing before it leaves the nucleus; the non-coding regions are
removed and the (coding regions) are spliced together. This results in a mature mRNA molecule
that can be translated by the ribosome. It reaches the ribosome. The ribosome binds the mRNA
and the tRNA molecules. The tRNA match with their trios called codons. Each tRNA carries a
specific amino acid and has an anticodon sequence that matches with a specific codon on the
mRNA. The base pairing between the codon and anticodon allows the tRNA to deliver the
correct amino acid to the growing polypeptide chain.
chromosome, there is DNA that is coiled.The histones are the proteins where DNA is wrapping
over it and to form a chromatin fiber. When it unravels it reaches a dna that is a double helix
structure where each strand has a backbone. There are two enzymes, the helicase and the
topoisomerase. The topoisomerase relaxes the supercoiled DNA ahead of the replication fork
so the replication can continue to occur. The helicase enzyme is responsible for separating the
two strands of the double helix. Primase is an enzyme involved in DNA replication that helps to
synthesize short RNA primers that is the starting point. If they want to construct a DNA strand,
the primase indicates the polymerase where to start adding new nucleotides. They continue this
process until the DNA molecule is replicated.
This cell is called the eukaryotic cell. Inside the cell it had the nucleus and the ribosome.Since
the Dna can’t leave the nucleus, through the DNA it generates the rna that contains the
information that one wants to generate as a protein and that is denominated as mRNA. The
mRNA goes through a RNA processing before it leaves the nucleus; the non-coding regions are
removed and the (coding regions) are spliced together. This results in a mature mRNA molecule
that can be translated by the ribosome. It reaches the ribosome. The ribosome binds the mRNA
and the tRNA molecules. The tRNA match with their trios called codons. Each tRNA carries a
specific amino acid and has an anticodon sequence that matches with a specific codon on the
mRNA. The base pairing between the codon and anticodon allows the tRNA to deliver the
correct amino acid to the growing polypeptide chain.
