What facilitates the opening of the helix during elongation step of transcription?
(1) RNA polymerase
(2) Helicase
(3) Topoisomerase
(4) Gyrase
(1) RNA polymerase
(2) Helicase
(3) Topoisomerase
(4) Gyrase
Which of the following helps in termination of transcription?
(1) Sigma factor
(2) Translocase
(3) Ubiquitin
(4) Rho factor
What is added to the 5’ end of hnRNA in Eukryotes?
1. Poly A tail
2. Methyl cytosine triphosphate
3. Methyl guanosine triphosphate
4. Poly U tail
Some amino acids are coded by more than one codon. Hence genetic code is:
(1) Unambiguous
(2) Non specific
(3) Degenerate
(4) Universal
In actual structure, tRNA is a compact molecule which looks like a/an:
(1) Clover leaf
(2) Rail road
(3) Inverted L
(4) Alpha helix
Which of the following anticodons will hybridize with the mRNA codon 5’ – AUG – 3’?
1. 5’ – UAC – 3’
2. 5’ – TAC – 3’
3. 3’ – UAC – 5’
4. 3’ – TAC – 5’
Which of the following acts as a ribozyme for peptide bond formation in bacteria?
(1) 5s rRNA
(2) 23s rRNA
(3) 16s rRNA
(4) 5.1s rRNA
The UTR [untranslated regions] in an mRNA:
(1) Are present only at 5’ end and are not required for efficient translation
(2) Are present only at 3’ end and are not required for efficient translation
(3) Are present at both 5’ and 3’ ends and are not required for efficient translation
(4) Are present at both 5’ and 3’ ends and are required for efficient translation process
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