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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?

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

What is the primary function of surfactant in the alveoli?

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

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

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

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

Pulmonary capillaries (D) Signup and view all the answers

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

Generate ATP through oxidative phosphorylation (D) Signup and view all the answers

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

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