HotelInfantesAgres - Bawat tanong, may sagot. Logo

In Biology / Senior High School | 2025-07-24

What structure in the lungs allows gas exchange between the air and blood?
A. Bronchi
B. Trachea
C. Alveoli
D. Pleura

Asked by virgi8204

Answer (1)

Correct Answer: C. AlveoliThe alveoli are tiny air sacs in the lungs where gas exchange occurs. After air passes through the trachea, bronchi, and bronchioles, it reaches the alveoli—the main site for the exchange of oxygen and carbon dioxide.Each lung contains millions of alveoli, surrounded by capillaries. Their thin walls (only one cell thick) allow oxygen to diffuse into the blood and carbon dioxide to move from the blood into the alveoli to be exhaled. This diffusion process supports cellular respiration, where oxygen is used to produce energy (ATP).The trachea and bronchi are airways that conduct air but don’t exchange gases.The pleura is a protective membrane that reduces friction around the lungs.Damage to alveoli, such as in emphysema or pneumonia, can impair breathing and oxygen intake, highlighting the importance of healthy alveolar function.

Answered by BrainlyModIsBusy | 2025-07-26

Related Questions in Biology

[Sagot para sa’yo] What’s happening in nature? Have you noticed any changes in nature around your home or school? Even something simple is important!

[Sagot para sa’yo] Answer true or false to the following statements based on the graphic: a. _______ Enzymes interact with many different substrates. b. _______ Enzymes change shape after a reaction occurs. c. _______ An enzyme can be reused with a new substrate. d. _______ The substrate is changed in the reaction. e. _______ If the shape of the enzyme changed, it would no longer work. f. _______ When all substrates are used, the reaction stops.

[Sagot para sa’yo] ACTIVITY Situation: If you were given the chance to choose among the given 12 career and job opportunities in agriculture, which among those 12 job opportunities would you like yourself to indulge with. And why? Explain your answer intelligently. (Explain your answer in 5-10 sentences). cane you gave me a same with that and like research scientist​

[Sagot para sa’yo] MOST IMPORTANT HUMAN MATERIALS RESOURCES NEEDED IN DOING THE FOLLOWING ACTIVITIES ​

[Sagot para sa’yo] what would happen to the respiratory and circulatory system if one of them isn't working? question answered using RACE and evidence has to be a diagram.