Ribosomes are involved in the cell’s protein synthesis

Ribosomes are synthesized in the nucleolus, which is found in the nucleus envelope

Cells that must synthesize large amounts of protein have a small number of ribosomes

all ribosomes are free ribosomes

bound ribosomes are suspended in the cytoplasm

Bound ribosomes are attached to the endoplasmic reticulum (ER)

endoplasmic reticulum (ER) associated with the

Many cell organelles are connected through the

The membranes within a prokaryotic cell are physically connected and compose the endomembrane system

The membranes within a eukaryotic cell are physically connected and compose the

The endomembrane system includes the nuclear envelope, endoplasmic reticulum (ER), Golgi apparatus only

small membrane segments called

One important result of vesicles is the synthesis, storage, and export of molecules

The endoplasmic reticulum is a biosynthetic factory

The endomembrane system is a biosynthetic factory

There are two kinds of endoplasmic reticulum smooth and rough

Smooth ER lacks attached ribosomes

Rough ER lines the outer surface of membranes

smooth ER and rough ER are not connected

The rough and smooth endoplasmic reticulum differ in structure and function

enzymes of the rough ER are involved in the synthesis of lipids, oils, phospholipids, and steroids

Rough ER makes additional membrane for itself and proteins destined for secretio

Once proteins are synthesized, they are transported in vesicles to other parts of the endoplasmic reticulum