Which of the following statements about the endoplasmic reticulum (ER) is CORRECT?
A) The rough ER is the site of lipid synthesis.
B) The smooth ER has ribosomes associated with it.
C) The ER is a lipid storage organelle.
D) The ER is a transport system within the cytoplasm.
E) The smooth ER is a site of ATP synthesis.

Question

Quizplus · Accepted Answer

The endoplasmic reticulum (ER) is primarily a transport system within the cytoplasm, moving proteins and lipids to different parts of the cell, and also plays a role in detoxification, calcium storage, and lipid synthesis. The rough ER has ribosomes associated with it, while the smooth ER does not. Neither the rough nor the smooth ER is primarily responsible for ATP synthesis or lipid storage.

Which of the Following Statements About the Endoplasmic Reticulum (ER)