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    This isn't part if the syllabus but I was wondering...once the amino acid chain has been made from the mRNA chain of a DNA section, what happens to the mRNA once its been used?

    Does it just float around doing nothing?

    Thanks in advance!


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    The mRNA is either discareded or reused by the cell to make more proteins, after the first ones have been transported to the target.
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    Probably broken down by certain enzymes, then the atoms can be used to form other compounds
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    mRNA has a very short lifespan. i think it just breaks down. but it might be enzymes


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    They're broken down or read by another ribosome
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    Thanks everyone


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    (Original post by jazzzygirl)
    Thanks everyone


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    Yes, it's broken down (by enzymes that attack the mRNA when it is uncapped at the 5' end and lacks the sequence at the 3' end.) - if it wasn't, it would continue to interact with the ribosomes and the protein would be constantly expressed (ie produced), which would result in a) excess of protein to an extent of inefficiency and b) depletion of the cells amino acids and resources. In some cases, it may also be directly detrimental to the cell.

    Hope this helps
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    I would have thought become the free floating nucleotoides that form in semi conservative replication but no thymine so not really sure.
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    Yup ... mRNA gets chewed up by enzymes called ribonucleases ....
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    (Original post by Loiks94)
    I would have thought become the free floating nucleotoides that form in semi conservative replication but no thymine so not really sure.
    when degrade by the enzymes, they become the RNA (not DNA) bases used to make more RNA strands (not DNA strands).

    Careful not to get confused! You can't use RNA for DNA (apart from the primers)
 
 
 
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