Scientists conduct an experiment where they observe the process of protein synth

Question

Scientists conduct an experiment where they observe the process of protein synthesis in a laboratory. Which observation occurs in Area A?

removal of the GTP cap

addition of the poly-A-tail

addition of the initiation factor complex

removal of exons

a)

removal of the GTP cap

b)

addition of the poly-A-tail

c)

addition of the initiation factor complex

d)

removal of exons

nucleus DNA transcription protein tRNA amino acid rbosome prolo ribosome protein folding mRNA translation mRNAtranslation polypeptide chain Scientists conduct an experiment where they observe the process of protein synthesis in a laboratory. Which observation occurs in Area removal of the CTP cap addition of the poly-A-tail O addition of the initiation factor complex O removal of exons

Explanation / Answer

Correct answer is B) addition of the poly-A tail.

A) is wrong because before mrna leaves the nucleus a cap is added to the 5' end not removed.

C) is wrong because the translation occurs outside the nucleus and addition of of the initiation factors won't happen in nucleus

D) is wrong too because to get mature mrna introns are removed to get the coding part come together and protein can be made. So after removing the introns exons are spliced together to get the mature mrna. So exons are not removed, introns are removed.

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