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Endoplasmic Reticulum



Endoplasmic Reticulum: Important Cell Organelle

What is - definition

The Endoplasmic Reticulum is an organelle present within the cells of eukaryotes (presence of cell nucleus and various organelles).

Main Features:

- Formed from plasma membrane invagination;

- Formed by tubules and flattened vesicles;

- Has connection to the library (nuclear wrap);

- RE membranes surround spaces that are separated from the rest of the cell.

Functions

- Acts in the process of synthesis and transport of proteins;

- Participates in lipid metabolism;

- It also acts on intracellular transport (inside the cell).

Rough Endoplasmic Reticulum

- Ribosomes are adhered to the membrane, acting on protein production.

Smooth Endoplasmic Reticulum

- do not have membrane-bound ribosomes;

- Composed of a system of cylindrical tubules;

- They act in the production of hormones and lipids.

Biological curiosity:

- The endoplasmic reticulum was first visualized in 1945 by Belgian biologist Albert Claude.