A mature mRNA has a total of 900 nucleotides (from the 5\' to the 3\' ends) righ
ID: 215694 • Letter: A
Question
A mature mRNA has a total of 900 nucleotides (from the 5' to the 3' ends) right before leaving the nucleus. The resulting polypeptide will have:
900 amino acids
300 amino acids
less than 300 amino acids
More than 300 but less than 900 amino acids
Which of the following statements about RNA processing is NOT correct?
Introns are transcribed but not translated.
Exons are transcribed and translated.
The final step of splicing is formation of a phosphodiester linkage within a spliceosome.
Introns have no specific function after they are removed.
Promoter and terminator both are transcribed, but not translated.
A.900 amino acids
B.300 amino acids
C.less than 300 amino acids
D.More than 300 but less than 900 amino acids
Explanation / Answer
the correct answer should be
less than 300 amino acids because 3 nucleotide together called a codon codes for a single amino acid so 900 nucleotide should code for 300 aminoacids but a mature RNA have 5' and 3' UTR that do not code for any aminoacid so the number for amino acids should be less than 300.
The incorrect statement seems to be
Introns have no specific function after they are removed because it is seen in some cases that the intron can encode functional RNA by undergoing further processing and generate non coding RNA molecules that are also functional like a protein.
Feel free to leave a comment down below for any further query. Thank you.
C.less than 300 amino acids because 3 nucleotide together called a codon codes for a single amino acid so 900 nucleotide should code for 300 aminoacids but a mature RNA have 5' and 3' UTR that do not code for any aminoacid so the number for amino acids should be less than 300.
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