In prokaryotic cells, the first aminoacyl -tRNA in translation process is:()
A. fMet-tRNAfMet
B. Met-tRNAMet
C. Arg-tRNAArg
D. leu-tRNAleu
E. Asn-tRNAAsn
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tRNA molecule is composed of 74-95 bp which forms a clover structure. Besides the common AGCU, tRNA also contains some rare bases. The tertiary structure of tRNA is an inverted L.()
More than one codon encoding the same amino acid is called degeneracy of codon. And codons encoding the same amino acid are called synonymous codon.()
The ribosome is mainly composed of ribosomal RNAs and proteins. The main function of protein is to catalyze the formation of peptide bonds between amino acids while rRNA to provide recognition site of tRNA.()
If a mRNA is 1800bp, the polypeptide chain translated by this mRNA would contain 600 amino acids.()