Protein Synthesis: Initiation, Elongation, Termination — NEET Biology
🔥 Predicted for NEET 2027For 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.
Adjacent to a frequently-asked paragraph in the same chapter.
Refer to the figure. What ensures the correct sequence of amino acids during polypeptide formation?
View solution & NCERT explanation
Correct answer: C — Complementarity between tRNA and mRNA
tRNAs bring specific amino acids by base-pairing their anticodons with mRNA codons, ensuring correct amino acid sequence in the polypeptide.
What does NCERT say about For initiation ribosome binds?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.