1. 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   2. What is the leaf-like structure which prevents the entry of food into respiratory passages?   Larynx   Tongue   Pharynx   Epiglottis   Half-n-half Clue   3. Which cells of the blood carry oxygen to different parts of the body?   Larynx   Red blood cells   B   False   Half-n-half Clue   4. Identify bronchus in this diagram.   A   B   C   D   Half-n-half Clue   5. Complete the equation: Glucose + Oxygen = _______ + Water + CO2   None of these   Starch   Energy   Sucrose   Half-n-half Clue   6. Which part of the respiratory tract is also known as the voice box?   Larynx   Pharynx   Epiglottis   Trachea   Half-n-half Clue   7. True or False: Breathing through the mouth is considered as good as breathing through the nose.   True   False