Gas Exchange in Respiratory System Quiz

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Questions and Answers

Which of the following is the primary site of gas exchange between the blood and tissues?

  • Pulmonary capillaries
  • Bronchi
  • Alveoli (correct)
  • Bronchioles

What is the primary function of hemoglobin in the blood?

  • Transport carbon dioxide
  • Transport oxygen (correct)
  • Regulate pH
  • Catalyze cellular respiration

What is the primary function of the pulmonary circulation?

  • Transport oxygenated blood from the lungs to the body
  • Transport deoxygenated blood from the body to the lungs (correct)
  • Exchange gases between the blood and air
  • Regulate blood pressure

Which of the following is the correct order of structures that air passes through during inhalation?

<p>Nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, alveoli (B)</p> Signup and view all the answers

What is the primary function of surfactant in the alveoli?

<p>Decrease surface tension to prevent alveolar collapse (A)</p> Signup and view all the answers

Which of the following is the correct order of events during the Krebs cycle?

<p>Citrate formation, isocitrate dehydrogenation, $\alpha$-ketoglutarate decarboxylation, succinyl-CoA formation (A)</p> Signup and view all the answers

Which of the following is the primary site of oxygen uptake by hemoglobin?

<p>Pulmonary capillaries (D)</p> Signup and view all the answers

What is the primary function of the electron transport chain in cellular respiration?

<p>Generate ATP through oxidative phosphorylation (D)</p> Signup and view all the answers

Which of the following is the correct order of events during the electron transport chain?

<p>NADH and $\mathrm{FADH_2}$ donation, proton gradient formation, ATP synthesis, oxygen reduction (D)</p> Signup and view all the answers

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