Write the function of rough endoplasmic reticulum and smooth endoplasmic reticulum

Functions of Rough Endoplasmic Reticulum (RER) • It contains ribophorins for providing attachment to ribosomes. • It bears enzymes in the region of pores for modifying polypeptides synthesised by attached ribosomes, e.g., glycosylation. • It synthesises serum proteins, membrane proteins and a number of other proteins. • Proteins and enzymes synthesised by ribosomes enter the channels of RER both for intracellular use as well as secretion. • It provides enzymes precursors for the formation of lysosomes by Golgi complex. • SER can develop from RER by discarding ribosomes. Functions of Smooth Endoplasmic Reticulum (SER) • It is responsible for synthesis of fats inside the cells of adipose tissue, formation of sphaerosomes, synthesis of glycogen as well as glycogenolysis in liver cells, synthesis of sterol, etc. • As sarcoplasmic reticulum, it stores C a 2 + for release during muscle contraction. • It takes part in detoxification of toxic chemicals with the help of cytochrome P-450. • Synthetic products of RER pass on to Golgi complex through SER. Functions of Golgi bodies • All glandular cells depend upon Golgi complex for concentrating and packaging their products inside a soluble protein coat visible as dark staining under electron microscope. • Golgi complex brings about membrane transformation, that is, converting one type of membrane into other types. • Proteins synthesised by the rough endoplasmic reticulum and lipids synthesised by smooth endoplasmic reticulum reach th...

The another most essential component of the eukaryotic cell is the Endoplasmic Reticulum or ER. It occupies almost 10 percent of the total cell volume. ER is of two type smooth and rough. Though both share some common features too but differ in some. ER is membrane-bounded and is made up of cisternae, which is the network like structure. ER works for the chemical compounds required by the cell for its inner and outer environment. ER produce, sorts and transports these chemical compounds along with the storing of some of them like proteins and lipids. The ER has cavities in it, which occupies space in the cytosol, the lumen is the internal space present. The ER is connected to the nuclear membrane as well as from the cytosol by forming a connecting bridge between them. These were the essential features of the ER, but as we know even they exist in two types, which are smooth and the rough and so with the help of this content we will distinguish both of them. Content: Smooth Vs Rough Endoplasmic Reticulum • • • • Comparison Chart Basis for Comparison Smooth Endoplasmic Reticulum Rough Endoplasmic Reticulum Meaning Smooth ER appears like containing many circular marks which are the interlocking tubular sheets and they may be varied in look and function as well. Rough ER looks like the arrangement of the double membranes which are spotted with the ribosomes all over. They appear consisting of the parallel sheets of membrane. Found near Smooth ER is found near the cell membrane....

Let’s imagine you are a pancreatic cell. Your job is to secrete digestive enzymes, which travel into the small intestine and help break down nutrients from food. In order to carry out this job, you somehow have to get those enzymes shipped from their site of synthesis—inside the cell—to their place of action—outside the cell. The endomembrane system ( endo- = “within”) is a group of membranes and organelles in eukaryotic cells that works together to modify, package, and transport lipids and proteins. It includes a variety of organelles, such as the nuclear envelope and lysosomes, which you may already know, and the endoplasmic reticulum and Golgi apparatus, which we will cover shortly. Although it's not technically inside the cell, the plasma membrane is also part of the endomembrane system. As we'll see, the plasma membrane interacts with the other endomembrane organelles, and it's the site where secreted proteins (like the pancreatic enzymes in the intro) are exported. Important note: the endomembrane system does not include mitochondria, chloroplasts, or peroxisomes. The rough endoplasmic reticulum ( rough ER) gets its name from the bumpy ribosomes attached to its cytoplasmic surface. As these ribosomes make proteins, they feed the newly forming protein chains into the lumen. Some are transferred fully into the ER and float inside, while others are anchored in the membrane. If the modified proteins are not destined to stay in the ER, they will be packaged into vesicles,...

3.2 Conclusion Difference Between Smooth Endoplasmic Reticulum And Rough Endoplasmic Reticulum Let us unfold more key points that exhibit the difference between the smooth endoplasmic reticulum and rough endoplasmic reticulum. Character Smooth Endoplasmic Reticulum (SER) Rough Endoplasmic Reticulum (RER) Definition Smooth Endoplasmic Reticulum does not have ribosomes on its membrane. Rough Endoplasmic Reticulum possesses ribosomes attached to its membrane. Organized It is organized of vesicles and tubules. It is organized of cisternae and a few tubules. Found It is present near the cell membrane. It is present near the cytoplasm. Formation SER gives rise to Spherosomes/ Oleosomes. RER helps in the formation of lysosomes. Composed of It is composed of the tubules. It is composed of the cisternae. Synthesis Synthesises glycogen, lipids, and steroids. It participates in the synthesis of enzymes and proteins. Connection SER may be connected to plasmalemma and is peripheral. RER is connected with the nuclear envelope and is internal. Development Develops from Rough Endoplasmic Reticulum. It might develop from the nuclear envelope. Ribophorins It lacks in Ribophorins. It consists of ribophorins and helps ribosomes attach to ER Provide Provides vesicles for cis-face of the Golgi apparatus. Provides proteins and lipids for the Golgi apparatus. Produces It produces lipids and proteins. It produces proteins. Smooth Endoplasmic Reticulum Smooth Endoplasmic Reticulum or SER appears to...