Smooth Endoplasmic Reticulum lacks ribosomes.
The portion of the endoplasmic reticulum that lacks attached ribosomes is called smooth endoplasmic reticulum (SER). It is involved in lipid metabolism, detoxification of drugs and toxins, and calcium storage and release in muscle cells.
mitochondria peroxisomes lysosomes golgi apparatus/ complex nucleus nucleolus endoplasmic reticulum (ER) : smooth endoplasmic reticulum rough endoplasmic reticulum ribosomes
Two types of Endoplasmic Reticuli exists, the rough endoplasmic reticulum and the smooth endoplasmic reticulum. The rough endoplasmic reticulum is involved in the synthesis of proteins -{from through}- VIA the ribosomes embedded within its structure. The smooth endoplasmic reticulum is involved in the synthesis of lipids and steroids.
Ribosomes.
That would be the endoplasmic reticulum (ER), specifically the smooth endoplasmic reticulum. It lacks ribosomes on its surface, unlike the rough endoplasmic reticulum. The smooth ER is involved in lipid synthesis, metabolism, and detoxification processes.
Rough endoplasmic reticulum
The Smooth Endoplasmic Reticulum (SER) transports the proteins that are made by the ribosomes in the cell.
The rough endoplasmic reticulum has ribosomes. The smooth endoplasmic reticulum does not.
Chloroplast Rough Endoplasmic reticulum Mitochondria Golgi apparatus Ribosomes Nucleus Nucleolus Smooth endoplasmic reticulum
Smooth endoplasmic reticulum is considered "smooth" because it does not contain ribosomes that attach to its walls. "Rough" endoplasmic reticulum, on the other hand, is classified as all endoplasmic reticulum walls where ribosomes are attached. Ribosomes are created inside the nucleus and often move through the endoplasmic reticulum in the process of carrying out their function - making proteins.
Because there are no ribosomes on the surface of this organelle, unlike its couterpart, the rough endoplasmic reticulum whcih gets its name from the presence of the ribosomes.