BIOMOLECULES AND ENZYMES

Detailed explanation-1: -What structure mediates and controls the formation of polypeptides?-Ribosome. What’s polypeptide?-Polypeptides are polymers of amino acids-joined together by peptide bonds.

Detailed explanation-2: -The bond between the two amino acids is called a peptide bond. During translation, each amino acid is added to the next through this process of dehydration synthesis to form the polypeptide chain.

Detailed explanation-3: -The large ribosomal subunit catalyzes peptide bond formation and will do so by using small aminoacyl-and peptidyl-RNA fragments of tRNA.

Detailed explanation-4: -Here we review the crystallographic information on which the conclusion that the ribosome is a ribozyme is based, stressing the role of rRNA as a mediator of both peptide bond formation, and mRNA/tRNA interactions, the two aspects of ribosome function now best understood.

Detailed explanation-5: -Ribosomes receive information from the cell nucleus and construction materials from the cytoplasm. Ribosomes translate information encoded in messenger ribonucleic acid (mRNA). They link together specific amino acids to form polypeptides and they export these to the cytoplasm.