1. The exchange of carbon dioxide and oxygen takes place in the
A. alveoli**
B. asthma
C. bronchi
D. diaphragm
2. ________ is a substance in tobacco smoke that reduces the blood ability to carry oxygen
A. Tar
B. Nicotine
C. Asthma
D. Carbon monoxide**
Check
1. is correct
2. I'm not sure on. I think you maybe be right
a and d is correct
A
D
number two is tar
To answer the first question, the exchange of carbon dioxide and oxygen takes place in the alveoli.
To get this answer, you can refer to your knowledge of the respiratory system. The alveoli are tiny air sacs in the lungs where gas exchange occurs. During inhalation, oxygen enters the alveoli and diffuses into the bloodstream, while carbon dioxide, produced as a waste product of cellular respiration, diffuses out of the bloodstream into the alveoli to be exhaled.
To answer the second question, carbon monoxide is the substance in tobacco smoke that reduces the blood's ability to carry oxygen.
To arrive at this answer, you can use your understanding of the composition of tobacco smoke. Tobacco smoke contains various harmful chemicals, such as tar, nicotine, and carbon monoxide. While tar causes damage to the lungs and nicotine is the addictive component of tobacco, it is carbon monoxide that binds to hemoglobin in the red blood cells and reduces their capacity to transport oxygen. This can lead to decreased oxygen levels in the body and various health problems.
1. to deliver oxygen to the body
to remove carbon dioxide from the body
2. diaphragm
3. alveoli
4. tar
5. carbon monoxide