The Cell Tour: NSF & Landmark College Biology Success!
Rough ER
Rough Endoplasmic Reticulum
Smooth ERSmooth Endoplasmic Reticulum The Endoplasmic Reticulum
The Endoplasmic Reticulum is the "subway system" of the cell. There are two types of E.R.: Smooth - no ribosomes on the outside, and Rough - has ribosomes on the outside. The structure of Rough E.R. consists of membranous channels studded with ribosomes. The Smooth E.R. structure is a membranous channel that has no ribosomes attached. The function of the Rough E.R. is to transport molecules within the cell and protein synthesis. The function of Smooth E.R. is to transport molecules and synthesize lipids.
Question:What is the ER made up of?


The answer can be found here.
The Cell Tour Home Page animal cell image
Rough and smooth ER are found in both plant and animal cells.
plant cell image
On to the next organelle

 
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