Is hair biological, and is hair biologically active?

Hello, hair does not belong to living things. Of course, there is some controversy about how to define an organism, but the general consensus is that an organism must have the ability to survive and reproduce, or that its two most basic characteristics lie in metabolism and heredity. You can't just keep growing and you are a living thing, that's not the only condition for being a living thing, but if you understand it this way, as long as you are continuously supplied with H and Oh ions, you can continuously produce water, then can we say that water can continue to grow in such an environment and therefore water is a living thing?

Obviously not, right? Besides, no one says that creatures have to move, right? Plants don't move, huh?

Furthermore, isn't growth a form of movement?

So in general, hair is not a living thing.

No, each hair on the body grows from its own separate hair follicle. Within the hair follicle, new hair cells form from the root of the hair shaft. As new cells form, they squeeze old cells out of the hair follicle.

When squeezed out, the old cells die and become the hair we see.

And the essential difference between living things and non-living things is - whether there is life or not. Organisms have nine basic characteristics: 1. Organisms have a strict structure. A little bit to explain what is meant by a rigid structure, that is, the cell is the basic unit of structure and function of living organisms.

2. The organism can carry out metabolism. 3. Organisms can grow. 4. Organisms are stressful.

5. Organisms can reproduce and develop. 6. Organisms have the characteristics of heredity and variation. 7. Organisms can adapt to the environment and affect the environment to a certain extent.

8. Organisms can exchange substances with the outside world. 9. Organisms can breathe. Of these nine characteristics, metabolism is the most basic.

Characteristics such as biological growth and development, stress and other characteristics all require energy, which is based on metabolism.

No. It can be explained from two perspectives: hair, which is mainly made up of proteins, not cells, which are the most basic living systems on Earth (viruses are not discussed here), and it is clear that hair is not living things; Secondly, living organisms are biologically active systems, and although hair is said to have substances, and these substances are also grouped together in an orderly manner, they are not biologically active, so hair is not biological.

To sum up, hair is not a living thing.

No, hair is formed by the hardening and accumulation of dead proteins、Protein makes a basic nutrient in the body、So hair is inanimate、

I've given it to you, I hope it helps. "Hair" refers to the hair that grows on the head, hair is not an organ and does not contain nerves, blood vessels, and cells. Whereas, "living beings" are living beings with kinetic energy and are also a collection of objects, while individual organisms refer to living organisms.

Hair is mainly made up of keratin, which is certainly biologically active.

No, it doesn't. Hair is dead.

There is a theory that humans have gone through a stage of living in the ocean in the course of evolution.

There is relatively little basis for this statement, mainly including:

1. Humans, unlike other primates, do not have thick body hair, but have thick subcutaneous fat. There are similarities to diving beasts. For example, seals.

2. Humans have diving syndrome when they sleep. If the heartbeat slows down or something, the specific memory is not very clear. This symptom is similar to the physical condition of diving beasts, and it can be said to be a remnant of the evolution of adaptation to diving.

3. There is a stage in the history of human evolution (I can't remember the specifics), and there are almost no fossils about humans on land. So it is doubtful that this stage of humanity is spent in the ocean.

When humans lived in the ocean, the atmosphere was not as perfect as it is now, ultraviolet rays were relatively strong, and hair could protect the human body from ultraviolet rays. (Imagine a person standing upright in the water).

Although the function of hair in the human body is not as important as that of the heart, kidneys and other vital organs, it also plays an indispensable role: protecting the scalp, reducing and avoiding external mechanical (such as falling, bumping, smashing, beating, etc.) and chemical (such as acid, alkali, etc.) damage; cushion damage to the head; Prevent or alleviate the damage of ultraviolet rays to the scalp and tissues and organs within the scalp; It has a moisturizing and antifreeze effect on the head; Excretion, harmful heavy metal elements such as mercury and non-metallic elements such as arsenic in the human body can be excreted from the hair to the body; Metabolic action, providing an outlet for the secretion of sebaceous glands and sweat glands, as well as keeping warm in winter and dissipating heat in summer.

The scalp has a special place in **. It protects the skull and the brain within the skull. The scalp also provides a foothold for the hair.

Hair, in turn, plays a role in protecting the scalp and skull. The protection of scalp hair is more complex and involves more matters than the protection of other parts. Shampooing, combing, haircutting, perming, and dyeing hair are all important.

The selection and use of hair oils, sebums and shampoos, as well as hair protection and scalp massage, are also closely related to scalp and hair protection.