question_answer 9)

List two essential roles of ribosome during translation. 

Answer:

(i) When the small sub-unit encounters an mRNA, the process of translation of mRNA to protein begins. (ii) Two sites exist in large subunit of ribosome for subsequent amino acids to bind to and this be close enough to each other for formation of peptide bond. Ribosome functions as a catalyst (23srRNA in bacteria is enzyme - ribozyme) for synthesis of peptide bond.