The image shows a ribosome translating a membrane protein that will end up in the plasma membrane of the cell. Cytosol = cytoplasm, Endoplasmic reticulum lumen = inside of ER. Sketch the cell and the protein's pathway as it moves from the ER, through 3 layers of the Golgi and then to plasma membrane. Use your sketch to answer the following questions. 1. What cellular compartments will the C-terminus of the protein encounter? 2. What cellular compartments will the N-terminus of the protein encounter? 3. How many times will the protein be in a vesicle? Cytosol 5' 3' 5's 3' Internal signal sequence Endoplasmic reticulum lumen