Question 331 of 668
The first phase of translation involves the _______ of amino acids.
Amino acids are activated using ATP.
Molecular Basis of Inheritance MCQs
Class XII Biology • NCERT Based • NEET Practice
Question 332 of 668
The activated amino acids are linked to their specific tRNA, a process called _______
This is charging or aminoacylation of tRNA.
Question 333 of 668
The cellular factory responsible for synthesizing proteins is the _______
Ribosomes are the site of protein synthesis.
Question 334 of 668
The ribosome consists of structural RNAs and about _______ different proteins.
Ribosomes contain rRNAs and about 80 different proteins.
Question 335 of 668
A translational unit in mRNA is the sequence of RNA that is flanked by the start codon and the _______ codon.
The coding region is between start and stop codons.
Question 336 of 668
The untranslated regions (UTRs) are present at both 5' end (before start codon) and _______ end (after stop codon).
UTRs are at both ends of the mRNA.
Question 337 of 668
In prokaryotes, control of the rate of _______ initiation is the predominant site for control of gene expression.
Transcription initiation is the main control point.
Question 338 of 668
The Lac operon was elucidated by _______ and Monod.
Jacob and Monod described the Lac operon.
Question 339 of 668
The Lac operon consists of one regulatory gene (the i gene) and _______ structural genes.
There are three structural genes: z, y, and a.
Question 340 of 668
In the Lac operon, the i gene codes for the _______ of the operon.
The i gene codes for the repressor protein.