The nucleus directs protein synthesis by synthesizing messenger RNA (mRNA) according to instructions provided by the DNA. The mRNA is then transported to the. If your question is What is the site of the protein synthesis that occurs in the cytoplasm and on the rough ER? then the answer is as follows: Learn what is protein synthesis. Outlines the major steps in the process of protein synthesis, which is one of the fundamental biological processes. _____ is/are the site of protein synthesis in the cytoplasm. * A) Smooth endoplasmic reticulum B) Golgi apparatus C) Ribosomes D) Lysosomes E) Mitochondria Protein biosynthesis is the process whereby biological cells generate new proteins; it is balanced by the loss of cellular proteins via degradation or export. The second part of protein synthesis. The mRNA code is used to synthesize a specific protein at a ribosome in the cytoplasm. The site of protein synthesis. What organelle is the site of protein synthesis? A. control protein synthesis in cytoplasm?. for mediating the transportation of protein and fat. Biochemistry 3107 - Fall 1999 Protein Synthesis: The Nine Steps. As with any of the polymerization reactions, protein synthesis can be divided into three phases: Now that we’ve described DNA and RNA, it’s time to take a look at the process of protein synthesis. The synthesis of proteins takes two steps: transcription and. The ribosome (/ ˈ r aɪ b ə ˌ s oʊ m, -b oʊ-/ [1]) is a complex molecular machine found within all living cells, that serves as the site of biological protein.