Why is it said that proteins are important embodiments of the function of cells and organisms

The structure of living organisms is complex and multifunctional, think about what is it asking? Is it because of sugar? Lipid?

Or nucleic acids? Apparently neither. The structure of sugar molecules is simple, the form is single, the shape is like cm(H2O)N, the structure determines the function, and the sugar cannot have so many functions.

The same is true for lipids. Nucleic acids are very present in very small quantities in cells, and none of them are possible. Only the indefinite form of the R-group, peptide bond number, peptide chain number, and peptide chain of protein makes protein have complex spatial structure and function, and the content of protein in organic matter is also the largest, so protein is the executor of life activities and an important embodiment of biological function.

Protein physiological function: it constitutes an important part of the body's tissues and organs.

Because proteins are involved in the composition, transportation, catalysis, immunity, and other functions of cells and organisms, they are important embodiments of cell and organism functions

So the answer is:

1. Proteins are the structural basis macros of the cell membrane chain-missing structure. In cells, there is a higher amount of protein in any kind of membrane.

2. The main component of the cytoskeleton is protein, which plays an important role in the maintenance of cell morphology and the transport of intracellular substances.

3. The respiration, photosynthesis and other life processes of cells require the participation of a variety of enzymes, and the essence of these enzymes is proteins.

4. Digestive enzymes, many hormones, etc. are proteins; Muscle contraction is inseparable from proteins such as actin; Hemoglobin is required for oxygen transport in blood; The transport of lipids and the like in the bloodstream depends on some lipoprotein ......

The biological functions of proteins are:

1. Structural proteins: as the structure of cells, such as membrane proteins, chromosomal proteins, etc.

2. Functional proteins:

1.Transport of substances: such as carrier proteins, hemoglobin.

2.Catalytic function: like most enzymes.

3.The exchange of information is divided into the recognition and regulation of vital activities: such as receptors (glycoproteins), protein-based hormones.

4.Immunity: such as antibodies, lymphokines and other immune molecules.

Therefore, protein is the main bearer of the raw skin life activities of the chakra holding object.

Protein is the material basis of life, there is no life without protein, the more complex the structure of the organism, the more numerous its protein types and functions, and its main biological functions are:

a) Catalytic and regulatory capacity.

Certain proteins are enzymes that catalyze the metabolic reactions of substances in living organisms.

Some proteins are hormones that have certain regulatory functions, such as insulin regulating glucose metabolism, and signal transduction in vivo is often mediated by certain proteins.

2) Transshipment function.

Certain proteins have a carrying function, such as hemoglobin, which is a transporter of oxygen and carbon dioxide, and serum albumin, which transports free fatty acids and gallbile.

red pigment, etc. iii) Contractile or motor function.

Certain proteins give cells and organs the ability to contract, allowing them to change shape or move. For example, skeletal muscle contraction depends on actin and myosball eggs.

White. (4) Defensive function, such as immunoglobulin, can resist foreign harmful substances and protect the body.

5) Nutritional and storage functions such as ferritin can store iron.

Proteins are available as:

Structural proteins. Transport proteins.

Able to regulate vital activities.

It has a catalytic effect.

Identification role. Immune effects.

Zhai Siming - High School Biology Must See Knowledge Points - The Function of Proteins.

Proteins have a variety of biological functions, which can be summarized into the following five aspects: (1

As enzymes, proteins have a catalytic function. （2

As a structural component, it regulates and maintains the structure of the cell. (3) As a modulator of metabolism.

Joints (hormones or repressors).

It coordinates and directs chemical processes within the cell. （4

As a means of transport, it can be in fine.

Intracellular or through cell membranes to transport small molecules or ions. （5

As an antibody, it plays a role in protecting the organism against foreign substances.

The role of invasion. Protein is indispensable for all living phenomena, even like viruses

Virus-like organisms that are mainly based on nucleic acids.

Substances, too, must be under the action of the proteins of the living cells in which they parasitize in order to manifest the phenomena of life.

Protein physiological function: it constitutes an important part of the body's tissues and organs.

1. Catalytic function. As enzymes, proteins have a catalytic function, and the vast majority of enzymes are proteins. For example, pepsin, which catalyzes protein breakdown, and cellulase, catalyzes cellulose degradation.

2. As a structural component. For example, receptors on the cell membrane, such as ribosomes inside the cell.

3. In higher organisms, protein also has the role of regulating metabolism. For example, protein hormones, such as insulin, growth hormone and so on.

4. Immune-active substances. For example, antibodies, complement, maintain the body's immune system.

Proteins are available as:

Structural proteins. Transport proteins.

Able to regulate vital activities.

It has a catalytic effect.

Identification role. Immune effects.

Zhai Siming - High School Biology Must See Knowledge Points - The Function of Proteins.