A type of cell called a lymphocyte makes proteins that are exported from the cell. It is possible to track the path of these proteins within the cell by labeling them with radioactive isotopes. Which of the following might be the path of the protein from the site where its polypeptides are made to the lymphocyte's plasma membrane?

Step-by-step solution

The surface of the rough endoplasmic reticulum is studded with the ribosome. It is located near the nucleus and continues with the outer layer of the nuclear envelope. This RER is very important in the synthesis and packaging of proteins. These proteins are transported through tubules to the smooth endoplasmic reticulum that lies near to the Golgi apparatus and then these proteins diffuse to the deepest layer of the Golgi apparatus with the help of transport vehicles. Then these proteins are transported to the cell