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What are the two types of endoplasmic reticulum?
What is endoplasmic reticulum?
Do all eukaryotic cells have an endoplasmic reticulum?
What is the Endoplasmic Reticulum? The endoplasmic reticulum transpires in two forms: a type with a ribosome-studded surface and another with a smooth surface. The latter is called the smooth endoplasmic reticulum, and the former is called the rough endoplasmic reticulum.
- 8 min
- The endoplasmic reticulum is a tubular network of membranes found within the cytoplasm of the eukaryotic cell.
- The endoplasmic reticulum is classified into two types: Smooth endoplasmic reticulum Rough endoplasmic reticulum
- The endoplasmic reticulum performs the following functions: It is responsible for the production and secretion of steroid hormones. It is also resp...
- Endoplasmic Reticulum Definition
- Endoplasmic Reticulum Overview
- Endoplasmic Reticulum Function
- Structure of The Endoplasmic Reticulum
- Endoplasmic Reticulum Location
- Types of Endoplasmic Reticulum
The endoplasmic reticulum (ER) is a large organelle made of membranous sheets and tubules that begin near the nucleus and extend across the cell. The endoplasmic reticulum creates, packages, and secretes many of the products created by a cell. Ribosomes, which create proteins, line a portion of the endoplasmic reticulum.
The entire structure can account for a large proportion of the endomembrane system of the cell. For instance, in cells such as liver hepatocytes that are specialized for protein secretion and detoxification, the ER can account for more than 50% of the total lipid bilayer of the cell.Similarly, the ER membrane system is particularly prominent in pan...
The ER plays a number of roles within the cell, from protein synthesis and lipid metabolism to detoxification of the cell. Cisternae, each of the small folds of the endoplasmic reticulum, are commonly associated with lipid metabolism. This creates the plasma membrane of the cell, as well as additional endoplasmic reticulum and organelles. They also...
The endoplasmic reticulum membrane system can be morphologically divided into two structures–cisternae and sheets. Cisternae are tubular in structure and form a three-dimensional polygonal network.They are about 50 nm in diameter in mammals and 30 nm in diameter in yeast. ER sheets, on the other hand, are membrane-enclosed, two-dimensional flattene...
The endoplasmic reticulum processes most of the instructions from the nucleus. As such, the endoplasmic reticulum surrounds the nucleus and radiates outward. In cells that secrete many products for the rest of the body, the endoplasmic reticulum can account for more than 50% of the cell. In general, the nucleus expresses mRNA (messenger RNA), which...
There are two major types of ER within each cell – smooth endoplasmic reticulum (SER) and rough endoplasmic reticulum (RER). Each has distinct functions, and often, differing morphology. The SER is involved in lipid metabolism and acts as the calcium store for the cell. This is particularly important in muscle cells that need Ca2+ions for contracti...
- Gabe Buckley
Aug 23, 2024 · 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.
- Kara Rogers
- The endoplasmic reticulum (ER) is a continuous membrane system that forms a series of flattened sacs within the cytoplasm of eukaryotic cells.All e...
- The endoplasmic reticulum (ER) serves important functions particularly in the synthesis, folding, modification, and transport of proteins. Differen...
- The ER was first noted in the late 19th century, when studies of stained cells indicated the presence of some type of extensive cytoplasmic structu...
The endoplasmic reticulum (ER) is a part of a transportation system of the eukaryotic cell, and has many other important functions such as protein folding. It is a type of organelle made up of two subunits – rough endoplasmic reticulum (RER), and smooth endoplasmic reticulum (SER).
Apr 1, 2023 · Types of Endoplasmic Reticulum (ER) 1. Smooth Endoplasmic Reticulum. They are also called as the agranular endoplasmic reticulum. This type of endoplasmic reticulum possesses smooth walls because the ribosomes are not attached to its membranes.
May 29, 2023 · There are two basic types (or regions) of ER: the rough endoplasmic reticulum (rough ER, or simply, rER) and the smooth endoplasmic reticulum (smooth ER, or simply, sER). The rER bears many ribosomes on its outer surface giving it a rough appearance as seen in electron micrographs; hence, its name.
Types of ER. ER is divided into two types based on the presence or absence of ribosomes on the outer surfaces. They are; smooth and rough endoplasmic reticulum. Smooth ER. The walls of smooth ER (SER) are smooth because no ribosomes attach to its membrane. The smooth ER or the agranular endoplasmic reticulum and mainly comprises of tubular ...
