Q. No.The discontinuously synthesized DNA fragments are later joined by:
(1) DNA helicase
(2) Topoisomerase
(3) DNA ligase
(4) DNA polymerase
(1) DNA helicase
(2) Topoisomerase
(3) DNA ligase
(4) DNA polymerase
Which of the following is true for both transcription and DNA replication?
(1) Principle of complementarity governs the processes
(2) Only of the two strands act as template
(3) Only a segment of both strands is involved
(4) Adenine base pairs with thymine
What defines a coding and a template strand in the transcription unit?
(1) Structural gene
(2) Ori
(3) Terminator
(4) Promoter
A segment of DNA coding for a polypeptide is most accurately defined as:
(1) Operon
(2) Gene
(3) Recon
(4) Cistron
In eukaryotes the sequences that appear in mature or processed mRNA are called:
(1) Introns
(2) Cistrons
(3) Exons
(4) Mutons
What facilitates the opening of the helix during elongation step of transcription?
(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
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