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Menthyl guanosine triphosphate is added ...

Menthyl guanosine triphosphate is added to the 5' end of hnRNA in a process of

A

splicing

B

capping

C

tailing

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
(b) : At 5' end of hnRNA, a cap is formed by modification of GTP into 7-methyl guanosine or `7^(m(G_(ppp)`. This process is called capping and it protects the mRNA from degradation by nucleases and also.
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Methyl guanosine triphosphate is associated with :

hn -RNA undergoes two additional processing. Out which, in one of them an unusual nucleotide (methyl guanosine triphosphate) is added to the 5' hnRNA. This is known as

Knowledge Check

  • Methyl guanosine triphosphate is added to the 5 end of hnRNA in a process called

    A
    Splicing .
    B
    Capping .
    C
    tailing.
    D
    Cutting .

  • 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.

    A
    (i) and (ii)
    B
    (iii) and (iv)
    C
    (ii),(iii) and (iv)
    D
    (i),(ii),(iii) and (iv)

  • Methl guanosine triphosphate is associated with

    A
    Point mutation
    B
    Tautomerism
    C
    Capping
    D
    Okazaki fragments

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    Assertion (A): Primary transcripts in eukaryotes are non-functional. Reason (R) Methyl guanosine triphosphate is attached to 5'-end of hnRNA.

    Assertion: Primary transcripts in eukaryotes are nonfunctional. Reason: Methyl guanosine triphosphate is attached to 5' - end of hnRNA.

    In Krebs cycle guanosine triphosphate is formed during the conversion of

    How many of the following is/are correct statement? (A)In capping an unusual nucleotides is added to the 3' end of hn RNA (B)In tailing adenylated residues are added at 3' end in a template independent manner. (C)The untranslated regions (UTR) are required for efficient DNA replication process. (D)The DNA-dependent DNA polymerases catalyse polymerisation only in one direction that is 5' to 3'.

    The figure shows a graph where A represents adenylate residues and B represents Methyl guanosine triphosphate molecules. Which of these cases will undergo immediate Capping and which one will undergo Tailing?

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