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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 is the function of the smooth ER?
- What is an example of smooth ER?
- Why is the rough ER important?
- What is the difference between smooth ER rough ER and Golgi apparatus?
- Where is the rough ER located?
- Is smooth ER prokaryotic or eukaryotic?
- Why is it called rough endoplasmic reticulum?
- How do rough and smooth ER compare structurally and functionally?
- What is smooth ER in plant cell?
- What does a ribosome do?
- How does the smooth ER make lipids?
- What would happen without the smooth ER?
- What is common between ER and Golgi apparatus?
- What is difference between Golgi bodies and endoplasmic reticulum?
What is the function of the smooth ER?
The smooth endoplasmic reticulum functions in many metabolic processes. It synthesizes lipids, phospholipids as in plasma membranes, and steroids. Cells that secrete these products, such as cells of the testes, ovaries, and skin oil glands, have an excess of smooth endoplasmic reticulum.
What is an example of smooth ER?
Examples of cells with abundant sER are sebaceous glands, gonadal cells involved in producing steroid hormones (such as Leydig cells in the testis and follicular cells in the ovary), hepatocytes in the liver, and cells of striated muscles.
Why is the rough ER important?
The function of the rough ER is to provide a place so ribosomes can produce proteins, and proteins are one of the most important things in a cell. Rough ER is the organelle that reads the DNA instructions to make the proteins. Also, the rough ER is involved in the transportation of proteins to the Golgi apparatus.
What is the difference between smooth ER rough ER and Golgi apparatus?
Part of the ER is continuous with the nuclear envelope of the cell. More specifically, the density of rough ER is higher near the nucleus and Golgi apparatus whilst the smooth ER seems to be located evenly throughout the cell.
Where is the rough ER located?
Rough ER lies immediately adjacent to the cell nucleus, and its membrane is continuous with the outer membrane of the nuclear envelope. The ribosomes on rough ER specialize in the synthesis of proteins that possess a signal sequence that directs them specifically to the ER for processing.
Is smooth ER prokaryotic or eukaryotic?
Endoplasmic reticulum is an organelle found in both eukaryotic animal and plant cells. It often appears as two interconnected sub-compartments, namely rough ER and smooth ER. Both types consist of membrane enclosed, interconnected flattened tubes.
Why is it called rough endoplasmic reticulum?
The rough endoplasmic reticulum (RER) is so named for the appearance of its outer surface, which is studded with protein-synthesizing particles known as ribosomes.
How do rough and smooth ER compare structurally and functionally?
Describe the structural and functional distinctions between rough and smooth ER. The primary distinction between rough and smooth ER is the presence of bound ribosomes on the rough ER. ... The smooth ER also functions in detoxification, carbohydrate metabolism, and storage of calcium ions.
What is smooth ER in plant cell?
The smooth endoplasmic reticulum, or smooth ER, is an organelle found in both animal cells and plant cells. ... The main function of the smooth ER is to make cellular products like hormones and lipids. It also distributes those products throughout the cell and to places in the organism.
What does a ribosome do?
A ribosome is a cellular particle made of RNA and protein that serves as the site for protein synthesis in the cell. The ribosome reads the sequence of the messenger RNA (mRNA) and, using the genetic code, translates the sequence of RNA bases into a sequence of amino acids.
How does the smooth ER make lipids?
The smooth endoplasmic reticulum plays a major role in synthesizing lipids by means of enzymes embedded in these smooth membranes. ... In the reproductive organs, smooth ER in the cells produces the steroid hormones testosterone and estrogen.
What would happen without the smooth ER?
The smooth ER has an important role in lipid and steroid synthesis, it is a storage for intracellular calcium as well. Without ER in the skeletal muscle fibers couldn't happen muscle contraction. In the absence of these cellular mechanisms the cell would probably die.
What is common between ER and Golgi apparatus?
Similarities Between Endoplasmic Reticulum and Golgi Apparatus. Both ER and Golgi apparatus are involved in the formation of endomembrane system of the cell. They are made up of flattened, membranous, fluid-filled sacs called cisternae. ... Therefore, both ER and Golgi apparatus are involved in protein maturation.
What is difference between Golgi bodies and endoplasmic reticulum?
The endoplasmic reticulum is involved in protein synthesis (RER) and lipid synthesis (SER), whereas the Golgi apparatus is involved in the packaging, transport and modification of proteins and lipids.
