What is a small structure within the cell that builds proteins called?

Ribosomes are the protein builders or the protein synthesizers of the cell. They are like construction guys who connect one amino acid at a time and build long chains. Ribosomes are special because they are found in both prokaryotes and eukaryotes.

The correct answer for this question would be RIBOSOMES. Ribosomes are the small structures within the cell that builds proteins and this process is called Protein Biosynthesis. Protein is essential in the repair of damages as well as directing chemical processes. Ribosomes can be found floating within the cytoplasm or attached to the endoplasmic reticulum. Hope this helps.

The basic building blocks of dna and rna are nucleotides