1. Exchange of air occurs in _______ which are also known as 'air sacs'.   Bronchi   Alveoli   Bronchioles   Alveolar ducts   Hint Half-n-half Clue   2. True or False: Exhalation and inhalation of air is known as "cellular respiration".   True   False   3. True or False: Two-layered membrane which covers the lungs is known as pericardium.   True   False   4. Which process does not occur in the nasal cavity? A. Trapping of large foreign bodies B. Exchange of gases C. Humidification of inhaled air D. Warming of inhaled air   A   B   C   D   Half-n-half Clue   5. Identify bronchus in this diagram.   A   B   C   D   Half-n-half Clue   6. Spirometer measures: A. Capacity of lungs B. Volume of air inhaled and exhaled C. Residual air D. All of these   A   B   C   D   Half-n-half Clue   7. Complete the equation: Glucose + Oxygen = _______ + Water + CO2   Energy   Sucrose   None of these   Starch   Half-n-half Clue