Other organelles inside a cell, consisting mostly of membranes, make up the endomembrane system. this system of organelles acts as the cell’s factory and delivery service. which molecules are processed by the rough endoplasmic reticulum (er)? a. lipids b. proteins c. carbohydrates d. nucleic acids

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.