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Old 01-23-2012
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Molecular RNA Molecule Nucleotides!

A laboratory is performing experiments to determine the structural function of several different types of RNA molecules . RNA molecule is isolated from culture of G+ve that has 90 nucleotide, it contains dihydrouracil, thymidine, acetylcytosine residue, which of the following is most likely composition of 3rd end of molecule ?
a- TATA
b- CCA
c- poly a
d- AUG
e- UAG
f- methylguanosinetriphosphate
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Old 01-23-2012
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E?
(poly A tail is only in eukaryotes, right?)
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Old 01-23-2012
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B

90 nucleotides is seen in tRNA which has CCA at the 3' end


Poly A tail is added to mRNA
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Old 01-23-2012
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yes B ......... its a tRna .........
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Old 01-23-2012
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answer is B. yup its tRNA
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yes the answer is B
but I did not know how to recognize tha it is tRNA ???
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Old 01-24-2012
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We can learn like this CCA has 3 letters so it is at 3' end of t-RNA
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