ribosome
ribosome Tiny structure in the cytoplasm of eukaryote cells (having a membrane-bound nucleus), involved in synthesizing protein molecules. Proteins are made up of specific sequences of amino acids, and segments of dna, called genes, contain the instructions for individual proteins. The DNA molecule is too large to escape from the cell nucleus into the cytoplasm, but a ‘copy’ is made in the form of messenger rna, (mRNA) and this travels to the ribosomes. Ribosomes attach themselves to the mRNA, then assemble the amino acids in the correct sequence to form a particular protein. Ribosomes are made up of proteins and ribosomal RNA. See also genetic code
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ribosome
