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Lisa asked in Science & MathematicsBiology · 1 decade ago

HELP!! How do i amio acids to the tRNAs based on the mRNA?

Attacch the correct amio acids to the tRNAs based on the mRNA codons???

TACAAATACAGAAA

PLEASE HELP I AM STUDYING FOR A TEST TOMORROW AND I HAVE NO IDEA!!!!

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    For starters I am going to assume the sequence you gave is the DNA sequence b/c mRNA does not contain Thymine (T).

    So in both steps DNA ---> mRNA and mRNA---> polypeptide with tRNA anto-codons are complimentary base pairing

    So you take our original sequence

    TAC AAA TAC AGA AA --->DNA, now the mRNa is the complimentary base pairing strand (remember C-G, A-T(or if RNA U)

    So you get

    AUG UUU UTG UCU UU --->mRNA

    now you should have a table of amino acids that gives you the three base codons and corresponding amino acids (if it says the three base sequence is for the codon it means the mRNA if it says anti-codon it means tRNA, there are many tables and I don't know which you are provided most are generally based off of mRNA/codons)

    So in this case the tRNA anticodons would be

    UAC AAA UAC AGA AA --->tRNA

    and the amino acid sequence is

    Met Phe Met Ser (UU I'm not sure as codons are 3 base pairs long)

    So in Summary

    DNA: TAC AAA TAC AGA AA

    mRNA: AUG UUU AUG UCU UU

    tRNA: UTC AAA UAC AGA AA

    Amino Acids: Met Phe Met Ser ??

    Ok so now you have the the information you need to answer the question, ie. Met attaches to the tRNA with anticodon UTC, which corresponds to mRNA codon AUG.

  • 1 decade ago

    Apple Tree Chewing Gum is how i remember DNA

    A changes to T and C changes to G (or the other way around)

    Awesome Underwear/ Chewing Gum is for mRNA and tRNA

    A changes to to U adn C changes to G (or the other way around)

    *all the Ts on the DNA will change to As*

    so what you wrote there would be like:

    DNA: TAC AAA TAC AGA AA

    mRNA: AUG UUU AUG UCU UU

    tRNA: UAC AAA UAC AGA AA

    then you go to the little chart thing and look up the amino acid. (i think you forgot to add one of the letters on the end)

    thats crazy i just learned this the other day and had the paper for homework haha.

  • 1 decade ago

    Is the strand TACAAATACAGAAA DNA or RNA? If it's RNA it shouldn't have any T's. need more info

    If it's DNA.... the mRNA strand would be AUGUUUAUGUCUUU because As turn to Us in mRNA. that would make the tRNA UACAAAUACAGAAA.

    I'm looking up the chart in my bio book.... the codons are....

    AUG: methionine, UUU: phenylalanine, AUG: methionine, UCU: serine, and UU is one codon short.

  • 1 decade ago

    im assuming the strand is DNA bc it has T's in it

    TACAAATACAGAAA

    transform the strand into rna

    AUGUUUAUGUCUUU

    then separate it into three base pairs (codon) and then assign each codon an amion acid depending on the base pair sequence

  • 1 decade ago

    ATGTTTATGTCTTT

  • Anonymous
    1 decade ago

    TACAAATACAGAAA

    ATGTTTATGTCTTT

    C-G

    A-T

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