Polypeptide chains (protein) are made on the?Golgi apparatus lysosome smooth endoplasmic reticulum rough endoplasmic reticulum

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A polypeptide is a long chain of amino acids. These are produced on the ribosomes, during protein synthesis. Messenger RNA contains the genetic code to assemble the polypeptide. Transfer RNA carries the appropriate amino acids to the growing polypeptide chain. Eventually, a stop message is reached. The polypeptide detaches from the ribosome and proceeds to fold into a three dimensional protein. This process occurs along a ribosome. Some of these are found in the cytoplasm and others are located along the endoplasmic reticulum. The rough endoplasmic reticulum contains many ribosomes. Thus, the answer to the question is choice 4.

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