EVERYDAY SCIENCE

Detailed explanation-1: -Ribosomes are macromolecular machines that catalyse the synthesis of proteins from amino acids; synthesis and assembly into subunits takes place in the nucleolus and includes the association of ribosomal RNA (rRNA) with ribosomal proteins translocated from their site of synthesis in the cytoplasm.

Detailed explanation-2: -Within the ribosome, the rRNA molecules direct the catalytic steps of protein synthesis-the stitching together of amino acids to make a protein molecule.

Detailed explanation-3: -Figure 1: Ribosomes assemble polymeric protein molecules whose sequence is controlled by the sequence of messenger RNA molecules. This is required by all living cells and associated viruses.

Detailed explanation-4: -Ribosomes organize translation and catalyze the reaction that joins amino acids to make a protein chain. Illustration of the molecules involved in protein translation. A ribosome is shown with mRNA and tRNA. Amino acids are emerging to form a protein chain.