BIOMOLECULES AND ENZYMES

Detailed explanation-1: -During translation, these tRNAs carry amino acids to the ribosome and join with their complementary codons. Then, the assembled amino acids are joined together as the ribosome, with its resident rRNAs, moves along the mRNA molecule in a ratchet-like motion.

Detailed explanation-2: -Amino acids are attached to tRNAs at the 3′-terminal adenosine at the end of a CCA trinucleotide sequence that is common to all tRNAs. In the second domain is a trinucleotide sequence known as the anticodon, located ∼75 Å from the amino acid attachment site.

Detailed explanation-3: -tRNA has been discovered as a factor playing a central role in the translation of genetic information (encoded in DNA and transcribed to mRNA) into amino acid sequences of proteins.