Translation

IMPORTANT

Translation: Overview

This topic covers concepts, such as, Translation of mRNA to Protein, Activation of Amino Acids, Termination of Protein Synthesis & Untranslated Regions of mRNA etc.

Important Questions on Translation

HARD
IMPORTANT

In mRNA, the untranslated region are present only at 5' end.

EASY
IMPORTANT

The formation of a peptide bond is catalysed by the enzyme _____. (peptidyl transferase/ribozyme)

MEDIUM
IMPORTANT

What are polysomes or polyribosomes? 

MEDIUM
IMPORTANT

The triplet on the coding strand of DNA is ATG. What would be the required anticodon on the corresponding tRNA during translation?

MEDIUM
IMPORTANT

Which of the following is not correct about translation?

EASY
IMPORTANT

Which one of the following pairs is correctly matched?

EASY
IMPORTANT

The (a) provides the template, (b) brings amino acids and reads the genetic code, and (c) play structural and catalytic role during translation.

MEDIUM
IMPORTANT

In protein synthesis first amino acid in polypeptide chain is normally methionine. But if methionine is not required in polypeptide chain it is separated from polypeptide chain by :-

MEDIUM
IMPORTANT

During initiation of translation in prokaryotes, a GTP molecule is required in:-

MEDIUM
IMPORTANT

Select the odd one out w.r.t. Shine Dalgarno sequence.

MEDIUM
IMPORTANT

Assertion : Peptidyl transfer site is jointly contributed by the two ribosomal subunits.

Reason : The enzyme peptidyl transferase is contributed by both 23S and 16S ribosomal subunits.

MEDIUM
IMPORTANT

A few steps involved in polypeptide synthesis are given below. In which of them, the tRNA participates?

I. Activation of amino acids

II. Elongation of the polypeptide chain

III. Translation

IV. Transcription

EASY
IMPORTANT

In the protein synthesis, tRNA carrying the amino acid enters from which site of ribosome?

MEDIUM
IMPORTANT

What would happen if in a gene encoding a polypeptide of 50 amino acids 25th (UAC) is mutated to UAA?

EASY
IMPORTANT

Protein synthesis in an animal cell takes place

EASY
IMPORTANT

What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA?

MEDIUM
IMPORTANT

During translation initiation in prokaryotes, a GTP molecule is necessary for which of the following?

HARD
IMPORTANT

Gene and cistron words are sometimes used synonymously because

EASY
IMPORTANT

Anticodon is an unpaired triplet of bases in an exposed position of

EASY
IMPORTANT

Which is not involved in protein synthesis?