Question

Which of the following choices reflects the appropriate order of locations through which a protein destined for the plasma membrane travels?
lysosome endosome plasma membrane ER
lysosome plasma membrane Golgi
lysosome plasma membrane ER Golgi plasma membrane

Answer 1

Answer:

The correct answer is-ER Golgi plasma membrane

Explanation:

Rough endoplasmic reticulum contains the ribosomes on it which helps in the formation of proteins from the mRNA by the translation process. The proteins chains synthesized are pushed in the cisternae of the RER where the primary modification of proteins takes place.

Then these proteins are released towards closely associated Golgi apparatus where the further modifications and processing of proteins takes place like glycosylation, sulfation, etc.  

After the modification, the proteins are released from the Golgi in enclosed vesicles to their destination like they can be sorted in plasma membrane or lysosomes. So the correct answer is-ER > Golgi > plasma membrane.