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?   Pharynx   Larynx   Epiglottis   Tongue   Half-n-half Clue   3. Write the correct sequence of the pathway through which air travels after entering the body. A. Larynx, pharynx, trachea bronchioles B. Pharynx, larynx, trachea, bronchioles C. Pharynx, larynx, bronchioles, trachea D. Pharynx, trachea, larynx, bronchioles   A   B   C   D   Half-n-half Clue   4. Complete the equation: Glucose + Oxygen = _______ + Water + CO2   Starch   Sucrose   None of these   Energy   Half-n-half Clue   5. Which part of the respiratory tract is also known as the voice box?   Larynx   Pharynx   Trachea   Epiglottis   Half-n-half Clue   6. Which cells of the blood carry oxygen to different parts of the body?   D   Larynx   Red blood cells   False   Half-n-half Clue   7. 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