Question

Why does rough ER look rough under the microscope? Question 7 options:

It has a greatly folded inner membrane. There is no cytoplasm around it.
It is attached to the nucleus.
It has ribosomes attached to it.

Answer 1

rough endoplasmic reticulum looks rough under a microscope because it is covered by little ribosomes, that help with protein synthesis. The reason smooth endoplasmic reticulum does not apear rough is because it's synthesis is of lipids and steroids and it therefore does not need these ribosomes.