Question

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

Group of answer choices

a rigid, protective layer found outside the cell membrane

a system of folded membranes

a tiny organelle that has no membrane

an organelle surrounded by a double membrane and containing DNA science

Answer 1

the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.

Step-by-step explanation:

the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.

Answer 2

a system of folded membranes