Characteristics of smooth endoplasmic reticulum
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.
What is the structure of smooth endoplasmic reticulum?
Smooth ER consists of a long network of a folded, tube-like structure. You can think of it like a pipeline with a lot of twists and turns. The interior of the smooth ER is called the lumen, which is enclosed by a phospholipid membrane, just like the membrane that encloses the entire cell.
What are the two roles of smooth ER?
Smooth Endoplasmic Reticulum Function: Smooth ER is responsible for the synthesis of essential lipids such as phospholipids and cholesterol. Smooth ER is also responsible for the production and secretion of steroid hormones.
What is the simple function of the smooth ER?
The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function.
What is difference between the smooth and rough ER?
The most basic difference between RER and SER is the presence of ribosomes. When ribosomes attach to the surface of an ER, it gives a characteristic rough appearance; hence it is called Rough ER. On the other hand, a smooth ER does not have ribosomes on its surface. It possesses ribosomes attached to its membrane.
What color is the smooth endoplasmic reticulum?
light green
| Organelle | Color (show) |
|---|---|
| Golgi | red |
| Rough ER | violet |
| Smooth ER | light green |
| Central Vacuole | violet |
Which of the following is true about smooth endoplasmic reticulum?
Answer is B) a, c and d. Endoplasmic reticulum are of two types rough endoplasmic reticulum and smooth endoplasmic reticulum. Function of smooth endoplasmic reticulum includes detoxification of chemicals and poison, carbohydrate metabolism, steroid and lipid synthesis.
Does the smooth ER make proteins?
As discussed below, there are two distinct types of ER that perform different functions within the cell. The rough ER, which is covered by ribosomes on its outer surface, functions in protein processing. The smooth ER is not associated with ribosomes and is involved in lipid, rather than protein, metabolism.
What is the main function of the endoplasmic reticulum?
endoplasmic reticulum (ER), in biology, a continuous membrane system that forms a series of flattened sacs within the cytoplasm of eukaryotic cells and serves multiple functions, being important particularly in the synthesis, folding, modification, and transport of proteins .
What is the structure and function of endoplasmic reticulum?
The endoplasmic reticulum is the largest single structure in eukaryotic cells. It consists of a range of interconnected shapes, including sheets and tubules, and comprises a lumen enclosed by a membrane that is continuous with the membrane that surrounds the nucleus of the cell (Figure 1).
How does the structure of the endoplasmic reticulum serve its purpose?
The endoplasmic reticulum, found in eukaryotic cells, is a network of tubes or flat sacs — kind of like a labyrinth of membranes — that serves as the factory of the cell, manufacturing and packaging up proteins and lipids to send around the cell, and even outside of it.
What are the structural and functional differences between rough 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 do the SER and RER have in common?
Both the SER and RER are large continuous sheets of membrane that fold back on themselves to form an enclosed space (lumen).
What are the four major functions of the endoplasmic reticulum?
The endoplasmic reticulum (ER) serves important functions particularly in the synthesis, folding, modification, and transport of proteins.
Why the endoplasmic reticulum is the best organelle?
Obviously, Rough ER is the best and most important organelle in the cell. It reads the DNA which reads the code which allows the ribosomes to make proteins, and without proteins the cell would not be able to work.
Which cells have high concentration of smooth endoplasmic reticulum?
It is present in eukaryotic cells and is associated with lipid synthesis, carbohydrate metabolism, regulation of calcium concentration, and drug detoxification. The endoplasmic reticulum (ER) is one of the most prominent organelles of a eukaryotic cell.
Which of the following is true about smooth endoplasmic reticulum?
Answer is B) a, c and d. Endoplasmic reticulum are of two types rough endoplasmic reticulum and smooth endoplasmic reticulum. Function of smooth endoplasmic reticulum includes detoxification of chemicals and poison, carbohydrate metabolism, steroid and lipid synthesis.
Which statement is correct about rough and smooth ER?
Statement 1 is correct. The rough endoplasmic reticulum (ER) contains ribosomes that are responsible for the manufacturing of proteins in the cells. The smooth ER manufactures fats or lipids in the cell which allow the functioning of the cell.
Which of the following is the primary function of the smooth endoplasmic reticulum quizlet?
One of the primary functions of the Smooth Endoplasmic Reticulum is to produce and move lipids, an essential component of a cell’s outer membrane, and steroids.
How does the smooth ER make lipids?
The folds of the ER’s membrane are called cisternae. The membrane is folded like this so that the organelle has more surface area. This gives it extra space to make proteins and lipids.
Is smooth endoplasmic reticulum attached to nucleus?
The endoplasmic reticulum membrane allows molecules to be selectively transferred between the lumen and the cytoplasm, and since it is connected to the double-layered nuclear envelope, it further provides a pipeline between the nucleus and the cytoplasm.