The function of the ribosome in polypeptide synthesis is to

The ribosome reads the mRNA (messenger RNA) and translates the nucleotide sequence into a polypeptide (protein) sequence. It reads the nucleotides in groups of 3 called codons and then accepts the correct amino acids from charged tRNAs to build the polypeptide in the correct order.

Regular or uniform type

Centriole.centrioles are present in animal cells but are usually absent in plant cells.