Question

The membranes of rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER) are continuous.

(a) True

(b) False

I had been asked this question during an interview.

The question is from Cytoplasmic Membrane Systems topic in chapter Cytoplasmic Membrane Systems of Cell Biology

Answer 1

Right option is (a) True

The explanation: There are two types of endoplasmic reticulum, rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER). It has been found that fluorescently labeled proteins and lipids can diffuse from one type of ER to another suggesting that their membranes are continuous.