Question

Choose the correct answer from the alternatives given :
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

The correct option is A the smaller ribosomal sub-unit

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 2 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.