Ribosomes are what make up proteins (the protein builders). There are a lot of ribosomes in the cytoplasm.
Explanation: Ribosomes connect mRNA(messenger RNA) and tRNA (transfer RNA) to synthesize polypeptides and proteins. Proteins are made up of building blocks amino acids. Polypeptides are chains of amino acids and portions of proteins in cells.
(Also, ribosomes are usually the small dots that you see in a cell diagram)
(Hope this helps :) )
