Recall what happens during gas exchange in the alveoli of the lungs. Carbon dioxide diffuses from air to bloodOxygen diffuses from air to bloodCarbon dioxide diffuses from blood to airOxygen diffuses from blood to air

Recall what happens during gas exchange in the alveoli of the lungs.

During gas exchange:Oxygen moves up a concentration gradient from the air in the alveoli to the bloodOxygen moves down a concentration gradient from the blood to the air in the alveoliOxygen moves down a concentration gradient from the air in the alveoli to the bloodOxygen moves up a concentration gradient from the blood to the air in the alveoliCHECK YOUR ANSWERS

Which statements about gas exchange in the human lung are true?When you inhale there is a higher concentration of carbon dioxide in the alveoli than in the bloodOxygen and carbon dioxide diffuse through the walls of the alveoliOxygen diffuses from the blood into the alveoliWhen you inhale there is a higher concentration of oxygen in the alveoli than in the blood

The exchange of gases in the alveoli of the lungs takes place bySelect an answerASimple diffusionBOsmosisCPassive transportDActive transport

Which of the following statements regarding normal gas exchange in the lungs is correct?Question 9Answera.Oxygen and carbon dioxide diffuse across the alveolar walls and capillaries.b.Blood that returns to the lungs from the body has low levels of carbon dioxide.c.The actual exchange of oxygen and carbon dioxide occurs in the capillaries.d.The oxygen content in the alveoli is highest during the exhalation phase.