Welcome to MooMooMath and Science In this video I would like to talk about the endoplasmic reticulum which is also called the ER The ER is found in both plant and animal cells but not in bacteria cells If you take a look at ER you will notice that it consists of folded membranes and looks like a transportation system The ER is located near the nose nucleus and helps the cell transport important materials throughout the cell. Let's look more closely at the function of the ER. First there are two types of ER, rough ER and smooth ER. Rough ER or RER is located very close to the nucleus. Rough ER gets its look from tiny protein factories called ribosomes which are embedded in its membranes.
The rough ER produces proteins. Some of these proteins will be transported from the ER to the goji apparatus. Other proteins will cross the ER to other parts of the cell or will be packaged in small sacs called vesicles which will pinch off the protein.
off and travel throughout the cell. Smooth ER looks smooth because it does not contain ribosomes. It has a different job than the rough ER. The smooth ER produces important chemicals called enzymes which may pinch off into a vesicle and travel to the golgi apparatus.
The smooth ER also produces lipids which are important fats used by the cell. The smooth ER is a good example of a smooth ER. The ER will transport these lipids throughout the cell or will package the lipids in vesicles and release them into the cytoplasm. In summary the ER is a transportation system used by the cell to create and transport proteins, enzymes and lipids throughout the cell.
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