Transcription

Choose the correct statements from the following.

A) Coding strand in DNA will be coding the m-RNA.

B) If two RNA molecules are produced simultaneously, they will form a double stranded RNA.

C) In prokaryotes, the structural gene is polycistronic.

D) The expressed gene sequences are defined as exons.

Identify the correct statement:

Which ONE of the following polymerases transcribes $5\mathrm{S} \mathrm{rRNA}?$

Which type of RNA polymerase enzyme transcribes precursor mRNA?

Which type of RNA polymerase enzyme transcribes precursor mRNA? 

Find out the series of genes in the transcription unit of the following statements.

I. Located towards 3 '-end of the structural gene.

II.  Flanked by the promoter and the terminator.

III. Located towards 3'-end of the coding strand.

Match the following

The correct answer is

Assertion (A) : During transcription both the strands of DNA are copied

Reason $\left(\mathrm{R}\right):$ If both strands act as template DNA would code for RNA molecule with different sequences

Identify the correct statement:

Assertion (A): The structural gene in a transcription unit can be said to be monocistronic or polycistronic.

Reason (R): In eukaryotes, the monocistronic structural gene has interrupted coding sequence - but the genes in eukaryotes split. The coding sequence or expressed sequences are defined as exons. Exons are said to be those sequence that appears in mature or processed $\mathrm{RNA}.$
The correct answer is

What is the corresponding sequence of $\mathrm{mRNA}$ when a polynucleotide template $\mathrm{DNA}$ strand is $3^{\text{'}}-\mathrm{TAC} \mathrm{GGT} \mathrm{AAG} \mathrm{CGG} \mathrm{ATC}-5^{\text{'}}$?

Read the following statements and choose the correct option.
(i) Tailing: It is addition of adenylate residues at 5' -end in a template independent manner.
(ii) Promoter: It is the site recognised by the RNA polymerase in association with $\rho$ factor.
(iii) Division of labour: RNA polymerase I and RNA polymerase III are responsible for 18S rRNA and tRNA transcription respectively.
(iv) Capping: addition of methyl guanosine triphosphate at the 5^'-end of hnRNA.

If the template strand of DNA is $3\text{'}\mathrm{ATGCATGCATGCATGC} 5\text{'},$ identify the sequence of RNA transcribed.

Choose the correct statements.
A) tRNA looks like an inverted 'L'.
B) Single DNA dependent RNA polymerase catalyses the transcription of all types of RNA in eukaryotes.
C) The structural gene in a transcription unit is polycistronic in prokaryotes.
D) DNA polymerase catalyses the polymerization of DNA in $5\text{'}\to 3\text{'}$ direction where $3\text{'}\to 5\text{'}$ strand acts as a template.

Find out the series of genes in the transcription unit of the following statements

(I) Located towards $3$ ' end of the structural gene

(II) Flanked by promoter and terminator

(III) Located towards $3$ ' end of the coding strand

On which strand of DNA, mRNA is constructed?

Which one of the following does not follow the central dogma of molecular biology?

The following statements are with respect to transcription in eukaryotes. Choose the correct ones.
(i) The strand of dsDNA which takes part in transcription process is called as coding strand.
(ii) The enzyme RNA polymerase can catalyse polymerisation only in one direction i.e., $5\text{'}\to 3\text{'}$ .
(iii) An unusual nucleotide methyl guanosine triphosphate is added to the $5\text{'}$ end of hnRNA during capping.
(iv) During tailing process, adenylate residues $\left(200-300\right)$ are added at $3\text{'}$ end in a template independent manner.

In which of the following direction/s will the the enzyme DNA dependent RNA polymerase catalyse polymerisation reaction?