What is the difference between rough ER and smooth ER?
The most basic difference between RER and SER is the presence of ribosomes. When ribosomes attach to the surface of an ER, it gives a characteristic rough appearance; hence it is called Rough ER. On the other hand, a smooth ER does not have ribosomes on its surface. It possesses ribosomes attached to its membrane.
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.
Why is 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. Also, the rough ER is involved in the transportation of proteins to the Golgi apparatus. Additionally, the rough ER makes certain enzymes that are vital to the cells.
What happens if there is no smooth ER?
The smooth ER has an important role in lipid and steroid synthesis, it is a storage for intracellular calcium as well. Without the RER the cell is not able to synthesis new plasma membrane proteins, lysosomal enzymes, proteines for the Golgi apparatus and proteins for extracellular secretion.
What happens if the rough ER is missing?
The cell would no longer be able to produce proteins. What would happen if the rough ER in the cell were destroyed by Dr. The cell would no longer be able to send proteins to the Golgi.
How does the rough ER get energy?
The ribosomes that are attached to the walls of the rough endoplasmic reticulum function just like free ribosomes would. That means that they synthesize proteins, which provide the energy needed for a cell to operate. The process of creating proteins is called translation.
What will happen if the rough endoplasmic reticulum lost all of its ribosomes?
Ribosomes are organelles that create proteins. Cells use proteins to perform important functions such as repairing cellular damage and directing chemical processes. Without these ribosomes, cells would not be able to produce protein and would not be able to function properly.
What happens if secretory vesicles are missing?
Secretion would also not be possible because the Golgi would create secretory vesicles. Secretion would not be possible so a build up of materials would occur impairing other organelles in the cell. Would not bring food, germs, bacteria into the cell to break down causing causing disease.
What would happen if the cytoplasm stopped working?
help the cell wall. Without the cytoplasm all the organelles would move around and damage the cell. Without the cytoplasm giving the cell shape and support the cells would be weak.
Where is the secretory vesicle located?
Secretory Vesicles contain materials that are to be excreted from the cell, such as wastes or hormones. Secretory vesicles include synaptic vesicles and vesicles in endocrine tissues. Synaptic vesicles store neurotransmitters. They are located at presynaptic terminals in neurons.
What does a secretory vesicle look like?
Secretory vesicles are organelles that look kind of like bubbles. Their main responsibility is to both remove and store various substances for the cell. The secretory vesicles coordinate the cargo transport from an organelle to any of the specified areas of the cell membrane.
Why is the secretory vesicle important?
Secretory vesicles play an important role in moving molecules outside of the cell, through a process called exocytosis. They are crucial for healthy organ and tissue function. For example, secretory vesicles in the stomach will transport protein-digesting enzymes to help break down food.
What happens when vesicles malfunction?
Bubblelike vesicles transport molecules such as enzymes, hormones, and neurotransmitters within cells, carrying their cargo to specific destinations in a highly orchestrated process. When the vesicle transport system malfunctions, disease results; many such diseases are associated with genetic defects.
What diseases affect the vesicles?
Several inherited human diseases [such as arthrogryposis-renal dysfunction-cholestasis and Hermansky-Pudlak (HP) syndromes] are associated with defective vesicle transport, which is an essential process for many cellular events.
What diseases are associated with vesicles?
Common examples include:
- Allergic reactions to drugs.
- Atopic dermatitis (eczema)
- Autoimmune disorders such as bullous pemphigoid or pemphigus.
- Blistering skin diseases including porphyria cutanea tarda and dermatitis herpetiformis.
- Chickenpox.
- Contact dermatitis (may be caused by poison ivy)
What causes a vesicle?
Vesicles can be triggered by a variety of different causes, even something as minor as friction on the skin. Some other minor causes also include allergic reactions, exposure to chemicals, cold sores, and burns.
What is the best treatment for vesicles?
Vesicles caused by eczema are often treated with topical medications, including retinoids and glucocorticoids. Burn blisters or vesicles will be treated with prescription burn creams. You may also be prescribed oral antibiotics to reduce the chance of infection.
What is the difference between vesicle and bulla?
A vesicle is a fluid-filled, dome-shaped lesion of 0.5 cm or less; if such a lesion is greater than 0.5 cm, it is termed a bulla. The fluid inside may be clear or hemorrhagic in nature. If the material is purulent, the lesion is called a pustule.
What are the little bumps filled with clear liquid?
Dyshidrosis is a skin condition that causes small, fluid-filled blisters to form on the palms of the hands and sides of the fingers. Sometimes the bottoms of the feet are affected too. The blisters that occur in dyshidrosis generally last around three weeks and cause intense itching.
What is the clear liquid that comes out of eczema?
What You Should Know About Weeping Eczema. Weeping eczema means you have eczema with pus-filled blisters. These sores literally weep, resulting in oozing or wetness. The pus is usually yellow or clear in color and eventually dries up as a crusty layer on your skin.
What happens if you pop Dyshidrotic eczema?
Do not pop the blisters of dyshidrotic eczema because of the risk of infection. A doctor may prescribe a cream to help the rash heal.
What do diabetic blisters look like?
Diabetic blisters can occur on the backs of fingers, hands, toes, feet and sometimes on legs or forearms. These sores look like burn blisters and often occur in people who have diabetic neuropathy. They are sometimes large, but they are painless and have no redness around them.