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Statement A : The primary transcript pro...

Statement A : The primary transcript produced in eukaryotic is translated without undergoing any modification or processing.
Statement B: The hn-RNA in humans has exons and introns.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

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The correct Answer is:
D
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Compare the statements A and B . Statement A : RNA produced during transcription in eukaryotic cells cannot be straight away used in photosynthesis. Statement B : RAN splicing phenomena help in the removal of exons . Choose the correct description.

Which of the following statements regarding transcription are correct? Br a. Transcription governs the principle of complementarity. Brb. If both strands of DNA act as a template, they would code for RNA molecule with same sequences. Br c. Double stranded RNA formed after transcription promotes RNA from being translated into protein. br d. Like the process of replication, the total DNA of an organism gets duplicated in transcription also

Asseration: RNA produced during transcription in eukaryotic cells cannot be straight away used in photosynethsis. Resson : RNA splicing phenomena helps in the removel of exons.

Select the correct statements regarding the process of transcription in eukaryotes. (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' rarr 3' . (iii) An unusual nucleotide methyl guanosine triphosphate is added to the 5' end of hnRNA during capping. (iv) During tailing process, adenylate residues (200-300) are added at 3' end in a template independent manner.

Statement I: When an ideal gas is taken from a given thermodynamics state A to another given thermodynamic state B by any polytropic process, the change in the internal energy of the system will be the same in all processes. Statement II: Internal energy of the gas depends only upon its absolute tmeperature.

Explain the post transcriptional modifications the hn-RNA undergoes in eukaryotic cell.

Statement - 1 : In following figure curve (i) and (iv) represent isothermal process while (ii) & (iii) represent adiabatic process. Statement - 2 :The adiabatic at any point has a steeper slope than the isothermal through the same point .

Mark the incorrect differences between eukaryotic and prokaryotic transcription. I. In eukaryotes , the genes are split having exons and introns while in prokaryotes it isn't . ii The structural gene which is to be transcribed is generally mono- cistronic in prokaryotes and poly-cistronic in eukaryotes . III . The RAN formed with the help of RNA polymerase in eukaryotes requires future processing to function as m-RNA while in prokaryotes it is directly used as m - RNA. IV. In eukaryotes, RNA polymerase binds to the promoter region while in prokaryotes it binds to the operator region .

(a) Describe the process of transcription in bacteria. (b) Explain the processing the hnRNA needs to undergo before becoming functional mRNA in eukaryotes.

A2Z-MOLECULAR BASIS OF INHERITANCE-Section B: Assertion-reasoning Questions
  1. Assertion : For the transmission of genetic information, RNA is better...

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  2. Assertion : RNA being a catalyst was reactive and hence unstable. Re...

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  3. Assertion : E. coli divides in 20 minutes. Reason : In E. coli the p...

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  4. Assertion : Deoxyribonucleoside triphosphate act as substrates and als...

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  5. Assertion : Origin of replication (ori) is a definite region in E. col...

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  6. Assertion : If a piece of DNA to be propagated during recombinant DNA ...

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  7. Assertion : In transcription only a segment of DNA and only one of the...

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  8. Assertion : Monocistronic genes are found in prokaryotes Reason : Po...

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  9. Assertion : Split genes are found in eukaryotes. Reason : Introns or...

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  10. Assertion : All three ENAs (mRNA, tRNA and rRNA) are needed to synthes...

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  11. Assertion : Nucleotide triphosphates acts as substrates during transcr...

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  12. Assertion : There is single DNA-dependent RNA polymerase that catalyse...

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  13. Assertion : The transcription and traslation can be coupled in bacteri...

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  14. Assertion : The relationship between genes and DNA are best understood...

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  15. Assertion : The HGP was coordinated by the U.S. Department of Energy a...

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  16. Assertion : Almost all (99.9%) nuceotide bases are exactly the same in...

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  17. Assertion : The size of VNTR varies from 0.1 to 20kb. Reason : The n...

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  18. Assertion : Chromosome 1 has 231 genes and the Y has 2968 genes. Rea...

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  19. Statement A : The primary transcript produced in eukaryotic is transla...

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  20. Assertion : Synthesis of mRNA takes place in 5' rarr 3' direction Re...

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