Which of the following describes the structure of the endoplasmic reticulum?

A. a system of folded membranes

B. a tiny organelle that has no membrane

C. a rigid, protective layer found outside the cell membrane

D. an organelle surrounded by a double membrane and containing DNA
(7 Points)

A

B

C

D

1 answer

The correct answer is:

A. a system of folded membranes

The endoplasmic reticulum (ER) is indeed characterized by its extensive network of folded membranes, playing a key role in various cellular processes, including protein and lipid synthesis.