What is the function of endoplasmic reticulum Class 9?
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 is the structure and 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 the Golgi apparatus?
The Golgi apparatus is a central intracellular membrane-bound organelle with key functions in trafficking, processing, and sorting of newly synthesized membrane and secretory proteins and lipids. To best perform these functions, Golgi membranes form a unique stacked structure.
What are the functions of the two types of endoplasmic reticulum?
The two types of endoplasmic reticulum are : Rough Endoplasmic Reticulum: Their main function is produce proteins in the cells and ribosomes are attached to their surface. Smooth Endoplasmic Reticulum: Their main function is to produce lipids and also detoxify toxins in the body in the liver and kidney cells.
What is the difference between the RER and SER?
The most basic difference between RER and SER is the presence of ribosomes….Difference between Smooth and Rough Endoplasmic Reticulum.
| Rough Endoplasmic Reticulum (RER) | Smooth Endoplasmic Reticulum (SER) |
|---|---|
| It possesses ribosomes attached to its membrane. | It does not have ribosomes on its membrane. |
| Formed of cisternae and a few tubules. | Formed of vesicles and tubules. |
What are the characteristics of endoplasmic reticulum?
The characteristics of endoplasmic reticulum is as follows: It is an organelle that can be found in the eukaryotic cells. These organelles form an interconnected network of flattened, sacs or tube like structures called as cisternae. The endoplasmic reticulum helps to form a skeletal framework.
Which of the following is function of RER?
Rough endoplasmic reticulum (RER), series of connected flattened sacs, part of a continuous membrane organelle within the cytoplasm of eukaryotic cells, that plays a central role in the synthesis of proteins.
What are the two functions of Golgi apparatus?
The vital function of the Golgi apparatus is packaging and secretion of proteins. It receives proteins from Endoplasmic Reticulum. It packages it into membrane-bound vesicles, which are then transported to various destinations, such as lysosomes, plasma membrane or secretion.
What are two types of ER?
The ER can be classified in two functionally distinct forms: smooth endoplasmic reticulum (SER) and rough endoplasmic reticulum (RER). The morphological distinction between the two is the presence of protein-synthesizing particles, called ribosomes, attached to the outer surface of the RER.
What is the function of a reticulum?
Ingesta flow freely between the reticulum and rumen. The main function of the reticulum is to collect smaller digesta particles and move them into the omasum while the larger particles remain in the rumen for further digestion. The reticulum also traps and collects heavy/dense objects consumed by the animal.
What is the main function of the Abomasum?
The main function of the abomasum is to digest protein from both feed and ruminal microbes.
What is RER and SER?
Quick look. Rough ER (RER) is involved in some protein production, protein folding, quality control and despatch. It is called ‘rough’ because it is studded with ribosomes. Smooth E R (SER) is associated with the production and metabolism of fats and steroid hormones.
What is the function of the endoplasmic reticulum?
The endoplasmic reticulum (ER) is an organelle found in the cells of eukaryotic organisms. It is an interconnected network of flattened sacs or tubes encased in membranes. Rough ER is studded with ribosomes, the site of protein synthesis.
What is the function of the rectum in the digestive system?
The main function of the rectum is to act as a temporary storage site for fecal matter before it is eliminated from the body through the anal canal. As the food you eat passes through the digestive system, it is broken down and nutrients are absorbed in the stomach, small and large intestines.
Where does the endoplasmic reticulum enclose the cisternal space?
The phospholipid membrane encloses the cisternal space (or lumen), which is continuous with the perinuclear space but separate from the cytosol. The functions of the endoplasmic reticulum can be summarized as the synthesis and export of proteins and membrane lipids, but varies between ER and cell type and cell function.
Why is the endoplasmic reticulum called the rough ER?
Endoplasmic Reticulum: Structure and Function. One region is called rough ER because it has ribosomes attached to the cytoplasmic side of the membrane. The other region is called smooth ER because it lacks attached ribosomes. Typically, the smooth ER is a tubule network and the rough ER is a series of flattened sacs.
What are the functions of rough ER?
The rough ER’s main function is to help form and store proteins, while the smooth ER store lipids, a type of fat. The whole reason why it’s called “rough” is because the ribosomes attaching to it give it a “bumpy” or “rough” appearance.
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).
