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प्रश्न
Where are the untranslated regions located on mRNA and why?
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उत्तर
A translational unit in mRNA is the sequence of RNA that is flanked by the start codon (AUG) and the stop codon and codes for a polypeptide. An mRNA also has some additional sequences that are not translated and are referred as untranslated regions (UTR). The UTRs are present at both 5' -end (before start codon) and at 3' -end (after stop codon). They are required for efficient translation process.
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संबंधित प्रश्न
List two essential roles of ribosomes during translation.
An operon is a ______.
The three codons which result in the termination of polypeptide chain synthesis are ______.
During translation, activated amino acids get linked to tRNA. This process is commonly called as ______.
In an mRNA molecule, untranslated regions (UTRs) are present at ______.
The process of translation is ______.
(a) Identify the polarity of x to x’ in the diagram below and mention how many more amino acids are expected to be added to this polypeptide chain.
(b) Mention the codon and anticodon for alanine.
(c) Why are some untranslated sequences of bases seen in mRNA coding for a polypeptide? Where exactly are they present on mRNA?
Explain the process of aminoacylation of tRNA and its role in the process of translation.
Codon on mRNA and anticodon on tRNA are ______.
How many different proteins does the ribosome consist of?
