What are the important roles of protein in the human body?

Protein is made up of amino acids and is another important energy contributor, providing 4 calories per gram of protein. But the more important role of protein is growth and metabolism. Excessive protein intake increases the burden on the kidneys.

Therefore, protein intake should be balanced between supply and demand according to nutritional status, growth and development requirements. Generally, protein intake accounts for about 20% of the total calories.

Physiological Roles of Proteins:

Growth and development, metabolism are the main roles.

It also provides calories at 4 thousand calories per gram.

Increases the burden on the kidneys.

Protein type:

Animal protein: It is the main protein of the body, such as meat, poultry and eggs, etc., these foods provide protein but also make us eat saturated fat and cholesterol and other components that are not good for the body. Therefore, lean meats, fish, skinless chicken and egg whites are the best choices, which are called "high-quality proteins".

Vegetable protein: It is another ** protein, mainly found in legumes, plant protein is low in saturated fat and cholesterol, and contains a lot of dietary fiber, and it is inexpensive, suitable for diabetic patients.

Protein is the material basis of all life, not only because protein is the basic component of the body's tissues and organs, but more importantly, protein itself is constantly synthesized and decomposed. This process of synthesis and decomposition promotes life activities, regulates the normal physiological functions of the body, and ensures the growth, development, reproduction, heredity and repair of damaged tissues of the body. According to modern biological views, proteins and nucleic acids are the main material basis of life.

Physiological functions of proteins: Proteins are important components of tissues and cells, such as muscles, bones and internal organs. The protoplasm of all cells is dominated by proteins, and the cell membranes and interstitium of animals are also mainly composed of proteins.

It is used to renew and repair tissue cells. Involved in the regulation of substance metabolism and physiological functions. Oxidation for energy.

1 gram of protein oxidizes in the body for energy about joules. Other features. Such as the physiological function of multifunctional plasma proteins.

There are more than 20 kinds of amino acids that make up proteins, and only some of them can be synthesized in the body, and the rest must be supplied by food proteins. Amino acids that cannot be synthesized in the body or are synthesized too slowly must be supplied by food proteins, so they are also called "essential amino acids". Amino acids that can be synthesized by the body do not have to be supplied by food proteins, which are also called "non-essential amino acids".

Among the many amino acids used to synthesize proteins in the body, there are 8 essential amino acids that need to be fed, namely lysine, tryptophan, phenylalanine, methionine, threonine, leucine, isoleucine and valine. The more essential amino acids a food contains, the higher its nutritional value. Animal proteins such as meat, eggs, and milk all contain 8 essential amino acids, also known as high-quality proteins; The essential amino acids contained in plant proteins such as legume proteins are incomplete.

However, if the pasta is composed of corn, millet and soybean protein mixture, its nutritional value is significantly improved. This effect of mixing several proteins with low nutritional value to improve their nutritional value is also called the complementary effect of different proteins.

Protein is the main component of cells and an important calorie in the body**.

Don't read those textbook content, let's put it this way, the human body is made of cells, cells are like a super complex machine, the shell and some compartments inside are made of lipids, then most of the parts (more than 90) are composed of proteins (and a small number of nucleic acids and vitamins, etc.), that is to say, protein is the most important component of life activities, and almost all the work is done by it. Nucleic acids are genetic material, like headquarters, sugars are fuels, and lipids form membranes in part and are stored in the other part as energy reserves.

Understand what protein does to the body.

Hello dear, find out the role and function of protein on the human body for you: Protein has many important functions in the body, protein can maintain the growth, renewal and repair of tissue cells, protein is the main component of tissue cells, so it is the most important function of protein to participate in the composition of various tissue cells. Only by continuously taking enough high-quality protein from the diet can the body maintain the needs of tissue cell growth, renewal and repair, which is especially important for children and patients in the growth and development period.

A: Dear Kiss, it's a pleasure to serve you! The answer to the question is that the effects of protein on the human body include repairing tissues, producing heat, helping the body absorb, and providing amino acids, as follows:

1.Repair tissues: Proteins can effectively repair important tissues in the human body, and at the same time can build tissues, 2

Generate calories: The human body needs a supply of protein to maintain calories, and when there is less protein in food, the body's calories are reduced. 3.

Help the human body to absorb: It can effectively maintain the normal metabolism of the body, and at the same time can help the transportation of various substances in the body, and promote the absorption of nutrients by the human body. 4.

Provide amino acids: The body cannot do without amino acids to maintain health, and protein can provide the body with essential amino acids. It is recommended to pay attention to a balanced diet every day, avoid lack of protein, and once there is a lack of protein, it should also be supplemented in time under the guidance of a professional doctor.