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What is the function of endoplasmic reticulum?

What is the function of 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 is the main function of the endoplasmic reticulum quizlet?

endoplasmic reticulum- A system of membranes that is found in a cell’s cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids.

What are the 5 functions of endoplasmic reticulum?

Endoplasmic reticulum performs the following functions:

  • It is responsible for the production and secretion of steroid hormones.
  • It is also responsible for the synthesis of essential lipids such as phospholipids and cholesterol.
  • It is responsible for the metabolism of carbohydrates.

What are the 3 main functions of the endoplasmic reticulum?

The endoplasmic reticulum (ER) serves important functions particularly in the synthesis, folding, modification, and transport of proteins. Differences in certain physical and functional characteristics distinguish the two types of ER, known as rough ER (RER) and smooth ER (SER).

What does endoplasmic reticulum ER look like?

The endoplasmic reticulum looks like a system with membranes that form cavities, flat cisterns and non-lamellar, round structures . Explanation: Endoplasmic reticulum is a system of intracellular membranes that produce and transport substances. It is a system of flat cavities or cisterns.

Why is the endoplasmic reticulum attached to nucleus?

The close association between the endoplasmic reticulum and the nucleus also enables the organelles to share information in a very efficient manner. For instance, if the endoplasmic reticulum begins to undergo functional problems and unfolded proteins accumulate within the organelle, which can be extremely hazardous to the cell, the organelle quickly sends a signal to the nucleus (as well as to the cytoplasm).

Does the endoplasmic reticulum contain enzymes?

The smooth endoplasmic reticulum also contains the enzyme glucose-6-phosphatase, which converts glucose-6-phosphate to glucose, a step in gluconeogenesis. It is connected to the nuclear envelope and consists of tubules that are located near the cell periphery. These tubes sometimes branch forming a network that is reticular in appearance.

What is the nickname for the endoplasmic reticulum?

Nickname: Highway. The endoplasmic reticulum (ER) is the transportation center for the cell. The ER is like the conveyor belt, you would see at a supermarket, except instead of moving your groceries it moves proteins from one part of the cell to another.

What do you need to know about the rough endoplasmic reticulum?

1 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). 2 Structure of the Rough Endoplasmic Reticulum. 3 Functions of the Rough Endoplasmic Reticulum. 4 Related Biology Terms. 5 Quiz.

How is the rough ER related to the cytoskeletal system?

The structure of the rough ER is also intimately involved with the presence of cytoskeletal elements – especially microtubules. When microtubule structure is temporarily disrupted, the ER network collapses and reforms only after the cytoskeleton is reestablished.

Where are proteins assembled in the endoplasmic reticulum?

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

How does the rough ER membrane ensure correct protein folding?

One important mechanism to ensure correct protein folding is the glycosylation of the nascent polypeptide through enzymes called oligosaccharyltransferases. These enzymes are part of the translocon complex of the rough ER membrane.