Answered

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What happens to mRNA after transcription is completed? (Points : 3) It remains in the nucleus. It becomes part of the nucleolus. It enters the cytoplasm and moves toward ribosomes. It leaves the cytoplasm through the cell membrane.

Sagot :

it enters the cytoplasm and heads toward the ribosome to begin translation
samueladesida43

Answer:

It enters the cytoplasm and moves towards the ribosome

Explanation:

Transcription is the first process of protein synthesis or gene expression. Transcription, which occurs in the nucleus, uses nucleotide sequences of DNA as a template to make an mRNA molecule.

mRNA, which is a complementary strand of DNA sequence, is a conveyer of the genetic instruction stored in the DNA molecule from the nucleus to the site where the genetic code will be read and used to make proteins, a second process of gene expression called translation.

Because the mRNA molecule unlike DNA is not used for long term storage, it exits the nucleus and gets transported into the cytoplasm where it attaches to a complex containing ribosomal proteins and specialized RNA molecules specifically the ribosomal RNA (rRNA) and transfer RNA (tRNA), this complex is known as RIBOSOME. The mRNA molecule in the ribosome is used as a template to assemble the series of amino acids to produce a polypeptide with a specific amino acid sequence.

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