Question

To initiate translation, the $mRNA$ first binds to

• A. the smaller ribosomal sub-unit
• B. the larger ribosomal sub-unit
• C. the whole ribosome
• D. no such specificity exists

Answer 1

Answer: (A)

The cellular factory responsible for synthesising proteins is the ribosome. The ribosome consists of structural $RNAs$ and about $80$ different proteins. In its inactive state, it exists as two subunits, as a large subunit and a small subunit. When the small subunit encounters an $mRNA$ the process of translation of the mRNA to protein begins.