One question about biofilms, the statement about biofilms is correct

Can tell you, all included.

I don't want to say too long, if you've studied cells, you'll know.

These are scattered and present in the introduction of various organelles.

Functions of biomembranes: a, the cell membrane maintains the stability of the internal environment of the cell and participates in the processes of material transport, energy exchange and information transmission. b. Biofilm provides a site and a relatively stable environment for chemical reactions of life activities.

c. Various biofilms divide the cells into many cell chambers to ensure that life activities are carried out efficiently and orderly.

Isn't protein processing on the endoplasmic reticulum and the Golgi apparatus?

RE: It was. So it's not the role of biofilms.

Biological membranes include cell membranes, nuclear membranes, and various organelle membranes. Because the chemical composition and basic structure of the membrane itself are roughly the same, the function is basically similar, that is, the material transportation, energy exchange, and information transmission are carried out inside and outside the membrane, and the expansiveness of the membrane area provides a large number of attachment sites for the enzymes of chemical reactions, separating the cells into small compartments, and ensuring that life activities are carried out efficiently and orderly. Protein synthesis and processing is the function of organelles such as ribosomes, endoplasmic reticulum, and Golgi apparatus, but not the function of biological membranes.

As these organelle membranes, the synthesized and processed substances are only transferred in the form of budding to form membrane vesicles, and here it is the organelle membrane that embodies the role of material transport.

Biofilms include mitochondria, chloroplasts, and nuclei of double membranes; endoplasmic reticulum, Golgi apparatus, vacuoles, lysosomes, cell membranes of monolayer membranes; Membrane-free ribosomes, centrosomes.

The membranes of mitochondria and chloroplasts have the effect of energy conversion.

There are also some prokaryotic bacteria that do not have mitochondria to provide energy, and their cell membranes play a role in respiration and can provide energy.

The function of biofilms is to secrete proteins (including digestive enzymes, antibodies, insulin, growth hormone, etc.), not to process proteins.

Nerve cell membranes have the function of conducting excitation and releasing transmitters; Needless to say, material transport.

Biofilm is a kind of excavated thin film structure in and out of living organisms, which is composed of lipid bilayers, proteins and sugars, etc., and has the characteristics of semi-permeability and selective permeability. Here are a few correct statements about biofilms:

1.The biofilm is the main component of the cell membrane, which encloses the plasma membrane inside the cell, controls the entry and exit of substances, and maintains the stability of the internal and external environment of the cell.

2.Biofilms can selectively allow some substances to enter or leave the cell through selective permeability, thus maintaining the balance of the concentration of substances inside and outside the cell.

3.Inside biofilms are many proteins and sugars that can be involved in biological processes such as cell signaling, cell adhesion, and recognition.

4.Biofilms exist not only inside cells, but also on the surface of microorganisms outside cells, such as bacteria and fungi, and play a role in protecting microorganisms and regulating the interaction between microorganisms and the environment.

In conclusion, biofilm is an important membrane structure of Cyptic cells and microorganisms in vitro and in vivo, which has important biological functions and significance.

The biofilm system refers to the organelles surrounded by membranes such as cell membranes, nuclear membranes, endoplasmic reticulum, Golgi apparatus, mitochondria, etc., which are closely related to the unified whole in structure and function. The biofilm system of the cell plays an extremely important role in the life activities of the cell.

Biofilm systems are made up of membranes.

What is the functional connection of biofilm systems.

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.

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

The structural characteristics of biofilms, take you to understand the structure and function of the system in more detail, come and learn.

Biofilm is a general term for all the membrane structures that make up a cell, also known as a cell membrane. Under the electron microscope, it has a structure of two dark sandwiches and one bright light. The plasma membrane is a layer of micromembrane inside the cell wall and outside the cytoplasm. The micromembrane that encloses organelles within the plasma membrane is called the endomembrane, or endomembrane system.

a) The chemical composition of the membrane and its function.

proteins, which form a film with lipids, determine the specificity of membrane function;

lipids, which function as a skeleton in biofilms;

Sugar, which forms glycoproteins and glycolipids with membrane proteins and membrane lipids, plays the role of recognition and immunity;

Nucleic acids, water, metal ions, etc. (trace amounts.

(2) Flow mosaic model.

There are many theories about the structure of membranes, to:

years of the United States and "

Flow mosaic model.

Biofilms have a liquid crystal structure and are fluid; The backbone of the biofilm is a lipid bilayer, and proteins are chimeric on the membrane, that is, it has mosaicism; Regardless of lipids, proteins.

Contains glycoproteins. The arrangement inside and outside the membrane is asymmetrically distributed, with asymmetry. The membrane is constantly moving, changing, and renewing.

iii) Function of biofilms.

1.Isolate the cell from the external environment and form the intracellular space into small cells (regionalization, which is conducive to specific biochemical reactions;

2.High degree of selective permeability, which is conducive to the absorption and transportation of substances;

3.It forms a large surface area, which is conducive to the acceleration of metabolism;

4.Identify external substances and stimulate biological responses to external substances;

5.Others, such as energy conversion, information transmission, immunity, pinocytosis, excretion, phagocytosis, etc.

Bioligical membrane: A phospholipid bilayer embedded with proteins and sugars (collectively referred to as 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, and there are also a large number of enzyme binding sites on the biofilm. A general term for all membrane structures that border cells, organelles, and their environment.

Organisms have biofilms except for some viruses. In addition to the plasma membrane (also known as the cell membrane), eukaryotic cells also have an endomembrane system that separates the organelles of various biological membranes, including nuclear membrane, mitochondrial membrane, endoplasmic reticulum membrane, lysosomal membrane, Golgi membrane, chloroplast membrane, peroxidal membrane, etc. The biofilms are all lamellar in morphology, with a thickness of about 5 10 nanometers.

It is mainly composed of lipids and proteins, and a small amount of sugars are covalently bonded to lipids or proteins. Different biofilms have different functions.

The phospholipid bilayer that makes up the biofilm, one end is the hydrophilic end, the other end is the hydrophobic end, the hydrophobic end is close to each other, the membrane is fluid, and the phospholipids that make them up are composed of a choline, phosphoric acid, fatty acid, glycerol molecule.

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, and there are also a large number of enzyme binding sites on the biofilm. A general term for all membrane structures that border cells, organelles, and their environment.

You will be like this all your life, and everyone will be ,,, one.