biology help please?
Proteins are manufactured from "blueprints" found on DNA. After they are translated, they are moved through a system of internal membranes before being distributed throughout the rest of the cell. At some point in this process, they are modified to their functional form.
a) Describe the movement of proteins from their manufacturing point through this internal membrane system.
b) In your own words, discuss the role of each of the following structures in the whole process: cell membrane, vesicles (at two points in the process), ribosomes, Golgi apparatus, and endoplasmc reticulum. Be sure to identify the correct order in which the proteins move through each of these structures.
One Response
Matt T
07 Mar 2010
Protein synthesis occurs from ribosomes on the rough endoplasmic reticulum. The proteins are sent to the Golgi apparatus where they are processed as they move through a variety of membranous sacs. The proteins are often activated here and are placed into vesicles to travel from sac to sac. The proteins are packaged into vesicles and are transported through the cell membrane out of the cell or implanted there or sent elsewhere in the cell.