BCECE Medical BCECE Medical Solved Papers-2012

  • question_answer
    During translation initiation in prokaryotes, a GTP molecule is needed in

    A)  association of 30 S, mRNA with formyl-met-tRNA

    B)  association of 50 S sub-unit of ribosome with initiation complex

    C)  formation of formyl-met-tRNA

    D)  binding of 30 sub-units of ribosome with mRNA

    Correct Answer: A

    Solution :

    During the process of translation, an initial complex is formed between mRNA, 30 S ribosomal sub-unit and methionyl tRNA. This complex is formed due to the association of \[I{{F}_{1}},\,I{{F}_{2}},\,I{{F}_{3}}\] initiation factors and GTP molecule.


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