What is the difference in structure of the rough and smooth endoplasmic reticulum?
Rough endoplasmic reticulums have ribosomes while smooth endoplasmic lack.
The rough endoplasmic reticulums contain ribosomes on the upper surface. The ribosomes are the sites of photosynthesis. Presence of ribosomes appears rough surface of the rough endoplasmic reticulums, while smooth endoplasmic reticulums lack ribosomes. Absence of ribosomes make the surfacwe of endoplasmic reticulms smooth .