1. True or False: Two-layered membrane which covers the lungs is known as pericardium.   True   False   2. Normal rate of respiration in an adult human being is _______ times/ minute. A. 10-12 B. 12-14 C. 16-18 D. 22-24   A   B   C   D   Hint Half-n-half Clue   3. 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   4. Complete the equation: Glucose + Oxygen = _______ + Water + CO2   None of these   Energy   Starch   Sucrose   Half-n-half Clue   5. Which cells of the blood carry oxygen to different parts of the body?   C   Red blood cells   B   D   Half-n-half Clue   6. True or False: Trachea contains 16-20 'C'-shaped cartilaginous rings.   True   False   7. True or False: Breathing through the mouth is considered as good as breathing through the nose.   True   False