Question

Кислород в легких переходит а) из воздуха в кровь, получается при окислении глюкозы б) из крови в воздух, получается при окислении глюкозы в) из воздуха в кровь, необходим для окисления глюкозы г) из крови в воздух, необходим для окисления глюкозы

Answer 1

В. переходит из воздуха в кровь необходим для окисления глюкозы

Answer 2

Ответ : в.Из воздуха в кровь ,необходим для окисления глюкозы

Answer 3

The Role of Oxygen in the Body

Oxygen plays a crucial role in the human body, particularly in the process of cellular respiration. It is involved in the transfer of energy from glucose molecules to produce adenosine triphosphate (ATP), which is the primary energy currency of cells. Oxygen is obtained from the air we breathe and is transported to various tissues and organs through the bloodstream.

Oxygen Transfer in the Lungs

The transfer of oxygen in the lungs occurs through a process called respiration. During inhalation, air enters the lungs and comes into contact with the alveoli, which are tiny air sacs in the lungs. The alveoli are surrounded by a network of capillaries, where the exchange of gases takes place.

Oxygen molecules diffuse across the thin walls of the alveoli and enter the bloodstream. This process is facilitated by the difference in oxygen concentration between the alveoli and the blood. The oxygen molecules bind to hemoglobin, a protein found in red blood cells, and are transported to various tissues and organs throughout the body.

Oxygen Transfer in Cellular Respiration

Once oxygen is transported to the tissues and organs, it is used in the process of cellular respiration to produce ATP. Cellular respiration occurs in the mitochondria of cells and involves the breakdown of glucose molecules.

During cellular respiration, glucose molecules are oxidized, releasing energy in the form of ATP. Oxygen acts as the final electron acceptor in the electron transport chain, which is a series of reactions that occur in the mitochondria. This process is known as aerobic respiration because it requires oxygen.

The oxidation of glucose molecules in the presence of oxygen produces carbon dioxide and water as byproducts. Carbon dioxide is then transported back to the lungs through the bloodstream and exhaled during exhalation.

Conclusion

In summary, oxygen plays a vital role in the human body by facilitating the transfer of energy from glucose molecules to produce ATP through the process of cellular respiration. It is obtained from the air we breathe and is transported to various tissues and organs through the bloodstream. Once in the tissues, oxygen is used in the mitochondria to oxidize glucose and produce ATP, with carbon dioxide and water being the byproducts.