AP BIOLOGY

Detailed explanation-1: -Endoplasmic reticulum is a network of membranes inside a cell through which proteins and other molecules move. Proteins are assembled at organelles called ribosomes.

Detailed explanation-2: -endoplasmic reticulum: A cell structure that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another.

Detailed explanation-3: -A maze of passageways called the endoplasmic reticulum carries proteins and other materials from one part of the cell to another.

Detailed explanation-4: -Rough endoplasmic reticulum is studded with ribosomes, which gives it a “rough” appearance. These ribosomes make proteins that are then transported from the ER in small sacs called transport vesicles.