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Assertion : mRNA attaches to ribosome th...

Assertion : mRNA attaches to ribosome through its 3 end.
Reason The mRNA has F- capsular nucleoitide and bases of lagging sequence.

A

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

B

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

C

If the assertion is true but the reason is false

D

If the both the assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
d
d) mRNA attaches itself to 30S unit of ribosome through its 5' end. This process is helped by G-cap nucleotide and basis of leader sequence present on mRNA where G-cap is present as in eukaryotes.
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Knowledge Check

  • The m-RNA attaches itself to the ribosome via its 3 end. The m-RNA has F-capsular nucleotide and bases of lagging sequence.

    A
    If both (A) and (R ) are true and (R ) is the correct explanation of (A).
    B
    If both (A) and (R ) are true but (R ) is not the correct explanation of (A).
    C
    If (A) is true but (R ) is false.
    D
    If both (A) and (R ) are false.

  • In a polyribosome complex, the ribosome present towards 5'end of mRNA has

    A
    longest polypeptide chain
    B
    smallest chain of polypeptide
    C
    all ribosomes have polypeptide chains of equal size
    D
    a chain without 'met'

  • Assertion : An mRNA has both initiation codon and termination codon. Reason : It specifies only a single polypeptide or number of them.

    A
    If both the assertion and the reason are true and the reason is a correct explanation of the assertion.
    B
    If both the assertion and reason are true but the reason is not a correct explanation of the assetion
    C
    If the assertion is true but the reason is false
    D
    If the both the assertion and reason are false

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