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Endocytosis: Also known as endocytosis, the process by which cells ingest macromolecular substances from the environment in the form of serous recesses, including receptor-mediated endocytosis and pinocytosis. When a cell ingests a macromolecule, it is first that the macromolecule attaches to the cell membrane.
Surface, this part of the cell membrane is invaginated to form small sacs that surround the macromolecules. The sacs then detach from the cell membrane to form vesicles.
Entering the inside of the cell, this phenomenon is called endocytosis.
Endocytosis: Endocytosis refers to the process of forming vesicles through the invagination of the cytoplasmic membrane, encapsulating external substances and entering the cell, which is a way for the cytoplasmic membrane to transport substances. By size of the input, state of matter, and specificity.
Endocytosis is generally divided into three types: phagocytosis, pinocytosis, and receptor-mediated endocytosis.
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Don't bite the words, these two words are one meaning, their English are endocytosis, these are his three forms, phagocytosis, pinocytosis and receptor mediated endocytosis, if you are a high school student, you know the first two on it, do not dwell on the Chinese translation, endocytosis, endocytosis are endocytosis, if you are still confused, ask me.
**From Wikipedia).
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Phagocytosis: swallowing; Swallowed; Swallow something.
Swallowing: If the cell ingests a liquid (containing soluble substances) through endocytosis, it is called pinocytosis, and the vesicles containing swallowing substances are called pinosomes or pinocytoticvesicles and micropinocytoticvesicie.
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Devouring is eating everything clean, while swallowing is just something to drink.
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Summary. Hello dear! Both endocytosis and endocytosis are processes in which the cell ingests substances, and they are similar in that both introduce external substances into the cell through the cell membrane.
Endocytosis refers to the formation of endosomes by forming membrane sacs in which cells encapsulate external substances, which then fuse with endoplasmic reticulum or lysosomes so that the substances can be broken down or utilized. Endocytosis refers to the engulfment of larger substances or cells as a whole by cells through the cell membrane to form endosomes, which then fuse with lysosomes, and the substances are broken down or utilized. Therefore, both endocytosis and endocytosis are active responses of cells to the external environment to obtain the substances and energy they need to maintain normal life activities.
The similarities and differences between endocytosis and exocytosis should be as brief as possible, the kind of one or two sentences.
Hello dear! Endocytosis and endocytosis are both processes in which the cells of the umena melina take up substances, and they are similar in that they both introduce external substances into the cell through the cell membrane. Endocytosis refers to the formation of endosomes by forming membrane sacs in which cells encapsulate external substances, which then fuse with endoplasmic reticulum or lysosomes so that the substances can be broken down or utilized.
Endocytosis refers to the cell swallowing a larger substance or cell as a whole through the circular membrane of the cell to form a endosome, and then the endocytosomes fuse with lysosomes, and the substances are broken down or utilized. As a result of this abrasion, endocytosis and endocytosis are both active responses of cells to the external environment to obtain the substances and energy needed to maintain normal life activities.
Hello dear! Endocytosis and exocytosis have the same characteristics: they are both processes of digestion and absorption of food by raw and coarse objects.
The difference between the big towns is that endocytosis is the first step in the digestion process, which breaks down food into smaller particles so that it can be absorbed and utilized; Exocytosis is the final step in the digestion process, which excretes the food that has been digested by the human body.
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The effects of endocytosis are as follows:
Endocytosis, also known as cytokinesis or endocytosis, is the process of transporting extracellular substances into the cell through the deformed movement of the plasma membrane. According to the different sizes of the entry substances and the different mechanisms of entry, endocytosis can be divided into three types: phagocytosis, swallowing, and receptor-mediated endocytosis.
1. Phagocytosis refers to the process of ingesting particulate matter larger than 1 m in diameter. When particulate matter is ingested, the cells are partially deformed, causing the plasma membrane to become depressed or pseudopodia forming to envelop the particles around human cells. The protrusion of pseudopodia is involved in actin, and cytophagocytosis can be inhibited with drugs that inhibit actin polymerization, such as focal cytopsalis.
2. Pinocytosis is the process by which cells ingest solutes or liquids. When the cell swallows, the local plasma membrane sinks to form a small fossa, which surrounds the liquid substance, and then the noveils leave the plasma membrane to form a small vesicle and enter the cell. Swallowing is divided into liquid phase endocytosis and adsorption endocytosis.
The first method is for non-specific cells to ingest extracellular fluid and its soluble substances into the cells.
In the latter approach, extracellular macromolecules, or particulate matter, are somehow adsorbed to the cell surface and are subsequently ingested into the cell. For example, cationic ferritin is first adsorbed on the surface of negatively charged cells by electrostatic action before being taken up by cells. Adsorption endocytosis has some specificity.
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1. It needs to consume energy, because exocytosis and exocytosis need to activate the protein (dynamin) to complete the separation of vesicles and membranes, and this process needs to consume energy in GTP.
2. The carrier exists on the membrane, because cytocytocytosis is non-transmembrane transport and does not pass through the biofilm. So endocytocytosis does not require a carrier.
3. Endocytosis and exocytosis are non-transmembrane transport and do not pass through biofilms. When the contents of the vesicles are excreted or enter the cell, the vesicles fuse with the cell membrane.
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Endocytosis, also known as endocytosis, is an important way for cells to obtain macromolecules and granular substances from outside the cell, and it is a common physiological phenomenon in eukaryotic cells.
Extracellular substances are encapsulated through the plasma membrane, and the plasma membrane is invaginated and forms membrane-coated vesicles, which are separated from the plasma membrane into the human cell and produce a series of physiological activities and physiological functions in the cell.
According to the size of endocytic vesicles formed by endocytosis, endocytosis can be divided into endocytosis and pinocytosis.
In protozoa, endocytosis is an important way to obtain nutrients from outside the body. Extracellular substances enter human cells through endocytosis and are then digested in lysosomes, releasing small molecules for cellular utilization. In higher organisms, endocytosis is not only a way for cells to obtain nutrients, but also an important means for the body to protect itself and defend against aggression.
For example, the cytokinesis of leukocytes in mammals. These cells can engulf pathogenic microorganisms that invade the body through cytocytosis, and macrophages can also engulf senescent and apoptotic cells in the body, protecting the body from damage.
Pinocytosis is a way for cells to take up water-soluble substances and fluids, and endocytic vesicles are generally small. In eukaryotic organisms, most cells are capable of pinocytosis, while only some special cells can undergo pinocytosis. Pinocytosis differs from endocytosis in that it occurs in almost all eukaryotic cells.
Pinocytosis occurs in different types of cells, and although the rate of endocytosis of the plasma membrane varies, it is usually rapid. In this process, the volume and surface membrane area of the cell remain constant, so the endocytosed surface membrane must be transported back in equal amounts by exocytosis.
Exocytosis is the process by which transport vesicles release their contents to the extracellular matrix through fusion with the cytoplasmic membrane and can be roughly considered as the reverse process of endocytosis. Membrane fusion is done with the help of fusion proteins.
As a result of exocytosis, on the one hand, secretions are released outside the cell, and on the other hand, the membrane of the vesicles is integrated into the plasma membrane, so that the plasma membrane can be replenished.
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Endocytosis or endocytosis is an important way for cells to obtain macromolecules and granular substances from outside the cell, and it is a physiological phenomenon that is prevalent in eukaryotic cells. Extracellular substances are encapsulated through the plasma membrane, which invaginates and forms membrane-coated vesicles, which detach from the plasma membrane and enter the intracellular area and produce a series of physiological activities and physiological functions within the cell. Endocytosis is closely related to a variety of life activities, such as immune response, neurotransmitter trafficking, cell signal transduction, and metabolic balance of cells and tissues.
Expulsion, also known as expulsion, is the excretion of the residue of exogenous substances ingested by exocytosis and pinocytosis after intracellular degradation. Phagosomes (phagosomes) are formed by the engulfment of exogenous substances ingested by endocytosis and pinocytosis by engulfing invaginated empty cells. Subsequently, the phagosome will fuse with the primary lysosome to form the secondary lysosome.
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Cells also require input and output macromolecules, which cannot be transported directly across the membrane through pores or transporters. Prokaryotes contain a multi-component output system in their plasma and outer membranes that allow them to secrete certain proteins, often toxins or enzymes, into extracellular mediators. In eukaryotic cells, the input and output of proteins to the cell are achieved by endocytosis and exocytosis, respectively.
Both endocytosis and exocytosis involve the formation of a special type of lipid vesicle. Proteins and certain other large substances are swallowed by the plasma membrane and carried into the cell (in the form of lipid vesicles).Receptor-mediated endocytosis begins with the binding of macromolecules to receptor proteins on the plasma membrane of the cell, and then the membrane caves, forming a lipid vesicle containing the macromolecule to be imported, also known as endocytic vesicles, which appear inside the cell.
The vesicles that appear in the cell fuse with the endosomes and then with the lysosomes, and the endocytic substances are degraded. The process of exocytosis is similar to endocytosis except that the transport direction is opposite. In exocytosis, proteins that are determined to be secreted from the cell are encapsulated within vesicles, then fused with the plasma membrane, and finally the containments within the vesicles are released into extracellular media.
It is in this way that enzyme-degrading zymogens are transported out of pancreatic cells.
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Exocytosis and exocytosis belong to active transport.
The plasma membrane can form a depression into the cell, swallowing small particles of liquid or solid on the periphery.
The process of swallowing liquids is called pinocytosis, and the process of swallowing solids is called phagocytosis.
The process of excreting secretory vesicles or other substances coated by membranes from the cell is called exocytosis.
What you swallow depends on the specifics.
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