Is smooth endoplasmic reticulum found in plant or animal cells?
There are two types of endoplasmic reticulum: rough endoplasmic reticulum (rough ER) and smooth endoplasmic reticulum (smooth ER). Both types are present in plant and animal cells.
Where is the smooth endoplasmic reticulum most plentiful?
Large amounts of smooth endoplasmic reticulum are found in cells that specialize in lipid metabolism. For instance, liver cells remove alcohol and drugs from the bloodstream. Liver cells have an impressive network of smooth endoplasmic reticulum.
What body part is like the smooth endoplasmic reticulum?
Body fat serves the same purpose as the smooth endoplasmic reticulum because it also stores lipids for long term energy.
What is the smooth endoplasmic reticulum responsible for?
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 the smooth ER made up of?
Smooth ER consists of a long network of a folded, tube-like structure. You can think of it like a pipeline with a lot of twists and turns. The interior of the smooth ER is called the lumen, which is enclosed by a phospholipid membrane, just like the membrane that encloses the entire cell.
What is the smooth ER made of?
Smooth endoplasmic reticulum (SER), meshwork of fine disklike tubular membrane vesicles, part of a continuous membrane organelle within the cytoplasm of eukaryotic cells, that is involved in the synthesis and storage of lipids, including cholesterol and phospholipids, which are used in the production of new cellular …
What would happen if the smooth endoplasmic reticulum stopped working?
If your cell did not produce proteins enzymes would not be available to speed up reactions throughout your body, and they would also not be available to make the many organelles made with proteins such as microtubules which would cause many other problems within the cell.
Why does the pancreas have a lot of rough ER?
Pancreatic acinar cells are highly specialized for digestive enzyme synthesis, storage, and secretion 17, therefore they have abundant endoplasmic reticulum (ER) to meet the protein synthesis rate, the highest among all adult human tissues 18-21.
What organ is the mitochondria like?
digestive system
What organ system is mitochondria similar to? The mitochondria is similar to the digestive system They both break down nutrients to produce energy Page 2 What organ system is similar to lysosomes and vacuoles? Compare lysosomes and vacuoles to the excretory system.
What are the three functions of smooth endoplasmic reticulum?
Its main functions are the synthesis of lipids, steroid hormones, the detoxification of harmful metabolic byproducts and the storage and metabolism of calcium ions within the cell. The smooth ER is distinguished from the other parts of the endoplasmic reticulum by the absence of membrane-bound ribosomes.
Is smooth er a prokaryote?
Prokaryotic cells are simple cells that lack membrane-bound nuclei and complex organelles. Endoplasmic reticulum, microtubules, and the Golgi apparatus are unique to eukaryotic cells, and will not be found in prokaryotes.
What are diseases caused by endoplasmic reticulum?
Endoplasmic reticulum (ER) dysfunction might have an important part to play in a range of neurological disorders, including cerebral ischaemia, sleep apnoea, Alzheimer’s disease , multiple sclerosis, amyotrophic lateral sclerosis, the prion diseases , and familial encephalopathy with neuroserpin inclusion bodies.
Where are ribosomes found in cytoplasm?
In a cell, ribosomes are located in two regions of the cytoplasm. Some ribosomes are found scattered in the cytoplasm (referred to as free ribosomes), while others are attached to the endoplasmic reticulum (bound ribosomes).
What structure is similar to the endoplasmic reticulum?
The sarcoplasmic reticulum (SR) is a membrane-bound structure found within muscle cells that is similar to the endoplasmic reticulum in other cells.
Where does the endoplasmic reticulum send the materials to?
The endoplasmic reticulum membrane allows molecules to be selectively transferred between the lumen and the cytoplasm , and since it is connected to the double-layered nuclear envelope, it further provides a pipeline between the nucleus and the cytoplasm.