Which cell structure reads the RNA transcript and assembles amino acids into proteins?
Question
Which cell structure reads the RNA transcript and assembles amino acids into proteins?
Solution
The cell structure that reads the RNA transcript and assembles amino acids into proteins is the ribosome. Here are the steps:
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Transcription: The first step in protein synthesis is transcription, which occurs in the nucleus. During transcription, the information in a DNA sequence (a gene) is copied into a complementary RNA sequence.
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RNA Processing: The RNA transcript, also known as pre-mRNA, undergoes a series of modifications including the addition of a 5' cap and a poly-A tail, and the removal of introns (non-coding regions) through a process called splicing.
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Translation: The processed RNA, now called mRNA, leaves the nucleus and enters the cytoplasm where it binds to a ribosome. The ribosome "reads" the mRNA sequence and translates it into a sequence of amino acids, creating a polypeptide chain. This process involves tRNA molecules, each carrying a specific amino acid, which match the codons on the mRNA.
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Protein Folding: The polypeptide chain folds into its final 3D structure to become a functional protein. This process can be assisted by other proteins called chaperones.
So, the ribosome is the cell structure that reads the RNA transcript and assembles amino acids into proteins.
Similar Questions
Which type of RNA brings amino acids to the ribosome during translation?
RNA is a nucleic acid involved in protein synthesis. Which type of RNA encodes the protein sequence?
Which part of the cell is the site for protein synthesis?
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What structure of protein is made during protein synthesis?
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