Which type of RNA carries the amino acids from the amino acid pool to the site of protein synthesis during translation?
A
rRNA
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B
mRNA
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C
tRNA
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D
hnRNA
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Solution
The correct option is C tRNA The information from one of the strands of DNA is copied to mRNA by a process known as transcription. In eukaryotes the RNA formed as a result of transcription will have both coding and non-coding sequences. This type of RNA is called heterogenous nuclear RNA (hnRNA). Further processing of hnRNA results in the formation of mRNA. Whereas in prokaryotes transcription directly results in the formation of mRNA.
mRNA or messenger RNA consists of nucelotide sequences that are read by the ribosomes in triplets. These triplets are called codons that codes for an amino acid.
rRNA is a major constituent of ribosomes. It is also involved in catalysing the peptide bond formation between amino acids during translation.
Ribosomes are the site of protein synthesis. During translation, the ribosomes read the codons on the mRNA and tRNA or transfer RNA brings amino acids corresponding to that codon from the cytoplasm to the ribosome to form the polypeptide chain.