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a) Biofilms and biofilm systems.
1. Biofilm.
It is a general term for membranes with similar chemical composition and roughly the same basic structure within cells. It includes the membrane of the cell, the nuclear membrane and the organelles.
2. Biofilm system.
The cell membrane, nuclear membrane, endoplasmic reticulum, Golgi apparatus, mitochondria and other organelles surrounded by membranes are closely linked and unified in structure and function, and the structural system they form is called the biological membrane system of the cell.
2) Structural linkages of various biofilms.
1. Direct contact.
2. Indirect connection.
The endoplasmic reticulum membrane, the Golgi membrane, and the cell membrane can be converted into each other.
3) Functional linkages of various biofilms.
1. Secreted proteins.
It refers to proteins that are synthesized in the cell and secreted outside the cell after being synthesized in the cell.
2. Take the synthesis and secretion of secreted proteins as an example:
3. Conclusion. The various biofilms in the cell have a clear division of labor and close connection in terms of function, and the various biofilms cooperate and work together to make the cell, a highly sophisticated life machine, run continuously and efficiently.
iv) the role of the biofilm system.
1. The cell membrane not only makes the cell have a relatively stable internal environment, but also plays a decisive role in the process of material transportation, energy exchange and information transmission between the cell and the environment.
2. Many important chemical reactions of cells take place on biofilms. The vast membrane area in the cell provides a large number of attachment sites for enzymes, creating favorable conditions for the smooth progress of various chemical reactions.
3. The biofilm in the cell separates the cell into small compartments, such as various organelles, so that a variety of chemical reactions can be carried out in the cell at the same time without worrying to each other, ensuring that the life activities of the cell are carried out efficiently and orderly.
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No, the membrane system is composed of membranes, and membranes are part of the cells, so how can the part contain the whole.
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The cellular biofilm system does not include the cell itself, such as: cornea, gastric membrane, nasal membrane, etc.
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The cellular biofilm system refers to the cell membrane.
Nuclear membrane as well as endoplasmic reticulum and Golgi apparatus.
Mitochondria and other organelles surrounded by membranes are closely linked in structure and function as a unified whole, because cell membranes, nuclear membranes, endoplasmic reticulum, Golgi apparatus, mitochondria and other organelles surrounded by membranes all involve cell membranes or organelle membranes, so this system is usually called a biological membrane system.
It can be seen that prokaryotic cells.
There is no biofilm system. Although prokaryotic cells have a cell membrane, they do not have a nuclear membrane, endoplasmic reticulum membrane, etc.
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Cell membrane, nuclear membrane and endoplasmic reticulum, Golgi apparatus, mitochondria and other organelles surrounded by membranes all involve cell membranes or organelle membranes Cell biofilm system refers to the cell membrane, nuclear membrane and endoplasmic reticulum, Golgi apparatus, mitochondria and other organelles surrounded by membranes, which are closely linked in structure and function. Therefore, this system is often referred to as a biofilm system.
The biofilm system, which we generally call the intracellular membrane system, includes membrane organelles such as nuclear membrane, cytoplasmic membrane, endoplasmic reticulum, Golgi apparatus, mitochondria, lysosomes, peroxisomes, lipid droplets, and intracellular structures such as autophagosomes, endocyptomsomes, and membrane vesicles. Their common feature is that they are encapsulated by a membrane structure of the phospholipid bilayer (lipid droplets are phospholipid monolayers). In cells, it is said that the endoplasmic reticulum is central to the intracellular membrane system, generally taking into account:
1.The endoplasmic reticulum is the site of phospholipid synthesis and is the phospholipid of the inner membrane system. It is also the origin of a variety of cell membrane structures.
2.The endoplasmic reticulum is widely distributed in cells, both connected to the outer nuclear membrane (or the outer nuclear membrane is actually the endoplasmic reticulum membrane) and can form er-pm contacts with the plasma membrane. Structural correlation also indicates functional linkage, so I won't go into details.
Similarly, the endoplasmic reticulum is also interconnected with the Golgi apparatus and lysosomes through the membrane vesicle transport system, and some studies have shown that the endoplasmic reticulum is in direct contact with mitochondria.
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Question 1: What is a biofilm system? What is its function The biofilm system is a membrane structure that constitutes the cell membrane, mitochondria, chloroplasts, and Golgi apparatus in the cellular organs, and is composed of bilayer phospholipid molecules, proteins, polysaccharides, etc.
Biofilm is selectively permeable, and if you compare the cell to a factory, the biofilm system acts as a wall, gate, and conveyor belt.
Question 2: What is the difference between biofilm system and biofilm Biofilm system refers to a system composed of biofilms that circulate with each other and achieve transmission in living organisms.
Biofilm refers to the phospholipid bilayer embedded with proteins and glycoproteins, which plays a role in dividing and separating cells and organelles, and is also an important part of many energy conversion and intracellular communication. A general term for all membrane structures that border cells, organelles, and their environment.
Question 3: What is the composition of a biofilm system? It is composed of a nuclear membrane, a fine old cellular, a cell membrane.
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Biofilm system refers to the co-composition of cell membrane, nuclear membrane, and organelle membrane. The composition and structure of these biofilms are very similar, and they are closely related in structure and function, which further reflects the coordination and cooperation between various structures within the cell. The biofilm system of the cell plays an extremely important role in the life activities of the cell.
In addition, the study of cellular biofilm systems has a great prospect in both medicine and production processes.
The concept cell is like a complex and delicate living machine, although the parts have different functions, they are very cleverly connected, so that the whole machine can operate flexibly. The cell membrane, nuclear membrane, endoplasmic reticulum, Golgi apparatus, mitochondria and other organelles are some functionally related "parts" in this "machine", they are all composed of membranes, these membranes have similar chemical compositions, and the basic structure is roughly the same, collectively known as biological membranes.
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What is the functional connection of biofilm systems.
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First, the cell membrane not only has a relatively stable internal space inside the cell, but also plays a decisive role in the exchange of substances, energy conversion and information transmission between the cell and the outside world.
Second, the large area of biofilm structure provides a large number of attachment sites for enzymes required for biological metabolism.
Third, the biofilm separates the various organelles in the cell, so that the life activities of the cell are orderly and efficient.
Simple memory method: the first cell membrane functions, the second provides the attachment site of the enzyme, and the third separates the organelles to make life activities efficient and orderly.
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It seems that your knowledge is confused and
The functional property of the membrane is selective permeability
The structural property of a membrane is fluidity
The two are to be memorized, and if you memorize them, you won't be confused
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The structural characteristics of biofilms, take you to understand the structure and function of the system in more detail, come and learn.
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The cell membrane system refers to the lipid bilayer membrane surrounding cells or organelles, which is composed of phospholipid bilayer combined with protein, cholesterol and glycolipids, which plays the role of osmotic barrier, material transport and signal transduction.
The biofilm system refers to the organelles that are surrounded by membranes such as cell membranes, nuclear membranes, endoplasmic reticulum, Golgi apparatus, and mitochondria.
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A country has land, sea, and airspace borders, and the human body has ** and mucous membranes as boundaries. As a basic living system, the boundary of the cell is the cell membrane. Note:
They differ in location, composition, and role.
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It is true that the membrane is fluid, but the substance must be endocytosed from the endoplasmic reticulum to the outside of the cell membrane! Think about it this way, the cell membrane is like a yarn scarf in a circle, when the wind blows, it flows, and the cell membrane is the same, and this is how it flows, but there is something to come out of the scarf, of course, it must be wrapped from the edge of the scarf, but the scarf can't be disconnected by itself and the cell membrane can be disconnected by itself and can grow well, the reason is the same, I can understand the kind of flow you think, but it's not as fluid as you say
Can tell you, all included.
I don't want to say too long, if you've studied cells, you'll know. >>>More
I'll give you four words, and you'll know.
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