Large amounts of smooth ER are found in liver cells where one of its main functions is to detoxify products of natural metabolism and to endeavour to detoxify overloads of ethanol derived from excess alcoholic drinking and also barbiturates from drug overdose.
What is the function of 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 does the smooth ER consume?
Smooth endoplasmic reticulum (ER) is devoted almost exclusively to the manufacture of lipids, and in some cases the metabolism of lipids and their associated products. Smooth ER synthesizes lipids, phospholipids, and steroids. It also carries out the metabolism of carbohydrates and drug detoxification.
What does the term smooth ER indicate?
The smooth endoplasmic reticulum, or smooth ER, is an organelle found in both animal cells and plant cells. … The smooth ER also regulates and releases calcium ions and processes toxins. It is described as ‘smooth’ to distinguish it from rough ER, which has ribosomes for protein synthesis on its surface.
Which cellular organelle is most important when someone consumes too much alcohol?
Explanation: The question states that the person has consumed too much alcohol, which means that the body must detoxify the chemicals from alcohol. … In addition to synthesizing lipids, the smooth endoplasmic reticulum plays an important role in detoxification of chemicals.
What are the functions of smooth and rough ER?
The rough ER, studded with millions of membrane bound ribosomes, is involved with the production, folding, quality control and despatch of some proteins. Smooth ER is largely associated with lipid (fat) manufacture and metabolism and steroid production hormone production. It also has a detoxification function.
What is SER and RER?
The smooth endoplasmic reticulum (SER) is distinguished from the rough endoplasmic reticulum (RER), the other basic type of endoplasmic reticulum, by its lack of ribosomes, which are protein-synthesizing particles that can be found attached to the outer surface of the RER to give the membrane its “rough” appearance.
What are the functions of RER and SER?
Introduction on Rough and Smooth Endoplasmic Reticulum
|RER-Rough Endoplasmic Reticulum||SER-Smooth Endoplasmic Reticulum|
|They are found near the nucleus of the cell.||They are found away from the nucleus in the cell.|
|Their function is to synthesize proteins.||Their function is to synthesize lipids.|
Does the smooth ER make proteins?
Then there’s the smooth endoplasmic reticulum, which doesn’t have those ribosomes on it. And that smooth endoplasmic reticulum produces other substances needed by the cell. So the endoplasmic reticulum is an organelle that’s really a workhorse in producing proteins and substances needed by the rest of the cell.
What is meant by Golgi complex?
A stack of small flat sacs formed by membranes inside the cell’s cytoplasm (gel-like fluid). The Golgi complex prepares proteins and lipid (fat) molecules for use in other places inside and outside the cell. The Golgi complex is a cell organelle. Also called Golgi apparatus and Golgi body.
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.
What’s a ribosome?
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.
What is a good analogy for smooth endoplasmic reticulum?
smooth endoplasmic reticulum « hallways: Factories have hallways through which information from the office travels to the workers in all departments. Similarly, the cell has smooth endoplasmic reticulum through which it is believed that messenger RNA travels from the nucleus to places where it is decoded.
What does alcohol do to body cells?
Alcohol slows the immune system, making bacteria-fighting white blood cells sluggish and much less efficient. Heavy drinkers may be more likely to succumb to illnesses such as tuberculosis or pneumonia, and increased risk of numerous forms of cancer.
What does alcohol do to cells?
Specifically, alcohol disrupts neural stem cell growth and division. Alcohol causes cells to progress more slowly through the cell cycle. The cycle consists of 4 major stages, during which cells grow and produce new proteins (G1), synthesize DNA (S), produce new organelles (G2) and divide by mitosis (M).
What part of the cell breaks down alcohol?
There are 2 ways that alcohol can be processed by your liver. Most alcohol is broken down, or metabolised, by an enzyme in your liver cells known as alcohol dehydrogenase (ADH).