Messenger RNA (mRNA)
consists of thousands of nucleotides
long single stranded helix
It is manufactured when DNA forms a mirror of part of one of its two strands
mRNA leaves the nucleus via pores in the nuclear envelope and enter the cytoplasm, where it associates with the ribosomes
acts as a template for proteins to be built
its structure is suited to its fuctions because it posseses the correct sequencess of the triplets of the organic bases that code for specific plypeptides
it is ealiy broken down and exists only while it is needed to manufacture a given protein
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