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प्रश्न
How does initiation of the translation process occur in prokaryotes? Explain.
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उत्तर
For initiation, the ribosome binds to the mRNA at the start codon (AUG) that is recognised only by the initiator tRNA. The ribosome proceeds to the elongation phase of protein synthesis. During this stage, complexes composed of an amino acid linked to tRNA, sequentially bind to the appropriate codon in mRNA by forming complementary base pairs with the tRNA anticodon. The ribosome moves from codon to codon along the mRNA. Amino acids are added one by one, translated into Polypeptide sequences dictated by DNA and represented by mRNA. At the end, a release factor binds to the stop codon, terminating translation and releasing the complete polypeptide from the ribosome.
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संबंधित प्रश्न
Which one of the following is a stop codon?
(a) UAG
(b) UAC
(c) AUG
(d) UCA
Briefly describe the following:
Translation
An operon is a ______.
During translation, activated amino acids get linked to tRNA. This process is commonly called as ______.
Which of the following statements is correct regarding ribosomes?
Regulation of gene expression occurs at the level of ______.
Which cellular process is shown below?
Which of the following are correct statements for a tRNA molecule?
- It is an adapter molecule.
- Previously called sRNA (soluble RNA)
- tRNA has a codon loop that has bases complementary to the code,
- it also has an amino acid accepter end to which it binds to amino acids.
- It is non-specific for each amino acid.
Aminoacylation of tRNA also known as ______.
Which of the following is true with respect to AUG?
