Rough Endoplasmic Reticulum (ER)is Most Abundant in What Kind of Cells

Question

Rough endoplasmic reticulum (ER)is most abundant in what kind of cells?
A)cells specialized for protein secretion​
B)nerve cells
C)cells that require minimal membrane synthesis
D)cardiac muscle cells
E)​slowly growing cells

Accepted Answer

Rough ER is responsible for the synthesis, modification and transport of proteins. Thus, it is most abundant in cells specialized for protein secretion, such as pancreatic cells that secrete digestive enzymes or antibody-producing plasma cells.