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What is the endoplasmic reticulum and what is its function?

What is the endoplasmic reticulum and what is its function?

The endoplasmic reticulum (ER) is the largest membrane-bound organelle in eukaryotic cells and performs a variety of essential cellular functions, including protein synthesis and processing, lipid synthesis, and calcium (Ca2+) storage and release.

What is the endoplasmic reticulum easy definition?

The endoplasmic reticulum (ER) is a continuous membrane system that forms a series of flattened sacs within the cytoplasm of eukaryotic cells. In animal cells, the ER usually constitutes more than half of the membranous content of the cell.

What is the role of the endoplasmic reticulum?

The endoplasmic reticulum (ER) is a large, dynamic structure that serves many roles in the cell including calcium storage, protein synthesis and lipid metabolism. The diverse functions of the ER are performed by distinct domains; consisting of tubules, sheets and the nuclear envelope.

What are the three functions of smooth endoplasmic reticulum?

Its main functions are the synthesis of lipids, steroid hormones, the detoxification of harmful metabolic byproducts and the storage and metabolism of calcium ions within the cell. The smooth ER is distinguished from the other parts of the endoplasmic reticulum by the absence of membrane-bound ribosomes.

What is the structure and function of smooth endoplasmic reticulum?

Smooth endoplasmic reticulum (SER), meshwork of fine disklike tubular membrane vesicles, part of a continuous membrane organelle within the cytoplasm of eukaryotic cells, that is involved in the synthesis and storage of lipids, including cholesterol and phospholipids, which are used in the production of new cellular …

What is another word for endoplasmic reticulum?

What is another word for endoplasmic reticulum?

endoplasmatic reticulum ergastoplasm
rough ER sarcoplasmic reticulum
smooth ER

What is the color of the rough ER?

Rough ER is covered with ribosomes that give it a rough appearance. Color and label the rough ER violet. Rough ER transports materials through the cell and produces proteins in sacks called cistern which are sent to the Golgi body, or inserted into the cell membrane.

What is the difference between rough ER and smooth ER?

The main difference between these two terminologies is that the Smooth Endoplasmic Reticulum is known for stocking the lipids and proteins. It is not bounded by ribosomes. Whereas, the Rough Endoplasmic Reticulum is bounded by the ribosomes and also stores proteins.

What is the difference between the RER and SER?

Smooth ER is derived from rough endoplasmic reticulum by sacrificing the ribosomes, whereas Rough ER originates from the nuclear membrane. The main difference between the SER and RER is the presence of ribosomes, as SER does not consist of ribosomes but RER consists of ribosomes.

What is meant by Ergastoplasm?

[‚ər′gas·tə‚plaz·əm] (cell and molecular biology) A cytoplasm component which shows an affinity for basic dyes; a form of the endoplasmic reticulum.

What is a rough ER in an animal cell?

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

What color is a Golgi body?

Animal Cell Coloring

Cell Membrane (light brown) Nucleolus (black)
Cytoplasm (white) Golgi Apparatus (pink)
Nucleoplasm (pink) Cilia (yellow)
Nuclear Membrane(dark brown) Rough Endoplasmic Reticulum (dark blue)
Ribosome (red) Smooth Endoplasmic Reticulum( light blue)

What is the relationship between the Golgi and the ER?

The functioning of the Golgi apparatus and ER are both so closely linked to the lysosomes that together, these entities compose the endomembrane system. Interestingly, lysosomal formation relies on the joint contribution of the ER and Golgi. The Golgi is responsible for the formation of lysosomes.

What is the rough ER structure?

Rough ER is made up of convoluted and sealed sacs, which are studded with membrane-bound ribosomes on the outer surface.

What is rough ER in biology?

Rough Endoplasmic Reticulum Definition. The rough endoplasmic reticulum (rough ER) is a part of the endomembrane system of the cell and a subset of the endoplasmic reticulum (ER).

What is role of endoplasmic reticulum in protein synthesis?

Though Smooth Endoplasmic Reticulum (SER) does not take part in protein synthesis unlike Rough Endoplasmic Reticulum (RER), it plays an important role in protein transportation. It regulates the transportation of proteins by acting as a transitional area for vesicles that transfer proteins to various locations.