Each type of protein is usually sent to a particular part of the cell. An important part of cell biology is the investigation of molecular mechanisms by which proteins are moved to different places inside cells or secreted from cells. Most proteins are synthesized by ribosomes in the rough endoplasmic reticulum (RER).
Alexander George Alex Clare (born 14 September 1985) is a British singer and songwriter.
Captain Alex Mason is a CIA agent and retired Marine Force Recon Captain. He is the main protagonist and the primary playable character in Call of Duty: Black Ops. He returns in Call of Duty: Black Ops II as the main playable character in the 1980s missions, as well as being an NPC and a main protagonist.