Identify the structure through which the mrna leaves the nucleus
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Use the following words to fill in the blanks: nucleus, base-pairing, transcription, translation, genes, cytoplasm, polypeptide chain, structure, ribosome, proteins, protein synthesis, cytosine, adenine, uracil, tRNA, mRNA, amino acid, DNA, RNA polymerase, codon.
DNA is made up of segments called
nucleotides
. Genes provide the coding to create
. Proteins are created through the processes of
and
. Together these processes are known as
. The first step in protein synthesis is transcription, where
is used as the template for the creation of an mRNA strand. The enzyme,
matches up the correct bases, using
rules. When adenine is found on the DNA strand,
will be the complementary base on the mRNA strand. When thymine is found on the DNA strand,
will be the complementary base on the mRNA strand.
and guanine are the other two bases that pair with one another. Since DNA is too large to leave the nucleus of the cell,
must be created. It is smaller and able to travel outside the
of a cell. Next, mRNA leaves the nucleus, heads through the
towards a
where translation occurs. In the ribosome, a
on the mRNA strand (3 bases), connects to the anticodon on a
molecule. When the codon and anticodon connect, the
on the tRNA molecule detaches, forming a
which eventually makes up the protein. Proteins are essential for life because they make up the
of living organisms and help organisms to function.