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प्रश्न
To initiate translation, the mRNA first binds to ______.
विकल्प
The smaller ribosomal sub-unit
The larger ribosomal sub-unit
The whole ribosome
No such specificity exists
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उत्तर
To initiate translation, the mRNA first binds to the smaller ribosomal sub-unit.
Explanation:
To initiate translation, the messenger RNA (mRNA) molecule first binds to the smaller ribosomal sub-unit. In its inactive state, the ribosome exists as two separate pieces, the large and small subunits. The process begins when the small subunit recognises and binds to the mRNA strand, often scanning for the start codon (AUG). Once this initial binding occurs and the initiator tRNA is in place, the larger ribosomal sub-unit then joins the complex to form a complete, functional ribosome that can begin building the protein chain.
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संबंधित प्रश्न
Depending upon the chemical nature of the template (DNA or RNA) and the nature of nucleic acids synthesised from it (DNA or RNA), list the types of nucleic acid polymerases.
With regard to mature mRNA in eukaryotes.
Regulatory proteins are the accessory proteins that interact with RNA polymerase and affect its role in transcription. Which of the following statements is correct about regulatory protein?
Methyl guanosine triphosphate is added at 5' end of hn-RNA in a process of ______.
If the base sequence of a codon in mRNA is 5'-AUG-3', the sequence of tRNA pairing with it must be ______.
The amino acid attaches to the tRNA at its ______.
In transcription in eukaryotes, heterogeneous nuclear RNA (hnRNA) is transcribed by ______.
On the ribosome, mRNA binds ______ and two sites in the ______ for subsequent amino acids to bind to be close enough to each other for the formation of a peptide bond.
Ribozyme is a/an:
Which of the following pair lack the unit membrane?
Sigma factor is a component of ______.
The exon part of mRNA has code for ______
Refer the given diagram. What does it represent?
Identify the correct statement.
Which is the “Only enzyme” that has “Capability” to catalyse Initiation, Elongation and Termination in the process of transcription in prokaryotes?
Give an account of post transcriptional modifications of a eukaryotic mRNA.
- Assertion: Ribosomal RNA is synthesized in the nucleus of the cell.
- Reason: It is translated with the enzyme RNA polymerase III.
