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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. The quantity of both rough and smooth endoplasmic reticulum in a cell can slowly interchange from one type to the other, depending on the changing metabolic activities ...
There are two distinct, though connected, regions of ER that differ in structure and function: smooth ER and rough ER. The rough endoplasmic reticulum is so named because the cytoplasmic surface is covered with ribosomes, giving it a bumpy appearance when viewed through an electron microscope. The smooth ER appears smooth since its cytoplasmic ...
Smooth endoplasmic reticulum ... it provides the cell with structural support, shape, protection, and functions as ... The fungal cell wall is a matrix of three main ...
Synthesis of proteins is by the rough endoplasmic reticulum (RER), and both the rough and smooth endoplasmic reticulum (SER) are involved in secretion of the proteins formed. [citation needed] The endoplasmic reticulum (ER) is involved in conjugation of proteins to lipid and carbohydrate moieties synthesized by, or modified within, the hepatocytes.
In addition to these 2 main processes, there are many other activities that take place in the endoplasm. Lysosomes degrade waste and toxins with the enzymes they contain. Smooth endoplasmic reticulum makes hormones and lipids, degrades toxins, and controls cellular levels of calcium.
Main function Structure Organisms Notes chloroplast : photosynthesis, traps energy from sunlight: double-membrane compartment: plants, algae, rare kleptoplastic organisms: has own DNA; theorized to be engulfed by the ancestral archaeplastid cell (endosymbiosis) endoplasmic reticulum
[3] [4] MCS are important in the function of the endoplasmic reticulum (ER), [5] since this is the major site of lipid synthesis within cells. [6] The ER makes close contact with many organelles, including mitochondria, Golgi, endosomes, lysosomes, peroxisomes, chloroplasts and the plasma membrane. [7]
Rough (containing ribosomes) and smooth (without ribosomes) microsomes are made from the endoplasmic reticulum through cell disruption. These microsomes have an inside that is exactly the same as the endoplasmic reticulum lumen. Both forms of microsomes can be purified by a process known as equilibrium density centrifugation. Rough and smooth ...