This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 17 Breathing And Exchange Of Gases – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 15 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The respiratory disorder which leads to irreversible distension and loss of elasticity of alveoli of lungs is A) Bronchitis. B) Bronchial asthma. C) Emphysema. D) SARS. Show Answer Correct Answer: C) Emphysema. 2. After a forceful inspiration the amount of air that can be breathed out by maximum forced expiration is equal to: A) IRV+RV+ERV. B) IRV+TV+ERV. C) IRV+TV. D) ERV+TV. Show Answer Correct Answer: B) IRV+TV+ERV. 3. What is the term for the amount of air that is left in the lungs after a maximal exhalation? A) Residual volume. B) Expiratory reserve volume. C) Inspiratory reserve volume. D) Tidal volume. Show Answer Correct Answer: A) Residual volume. 4. Exchange of gases at respiratory surface occurs by which process? A) Simple diffusion. B) Facilitated diffusion. C) Active transport. D) All of the above. Show Answer Correct Answer: A) Simple diffusion. 5. The solubility of carbon dioxide is about ..... times higher than that of oxygen across the respiratory membrane A) 20-25. B) 25-50. C) 125-150. D) 200-250. Show Answer Correct Answer: A) 20-25. 6. Deoxygenated blood from heart comes to lungs via(a) pulmonary vein(b) systemic vein(c) pulmonary artery(d) systemic artery A) Pulmonary vein. B) Systemic vein. C) Pulmonary artery. D) Systemic artery. Show Answer Correct Answer: C) Pulmonary artery. 7. IN which disease, due to flattening of tracheal vessels, alveoli are deprived of oxygen? A) Bronchitis. B) Asthma. C) Pneumonia. D) Emphysema. Show Answer Correct Answer: D) Emphysema. 8. Mark the incorrect statement in context to O$_{2}$ binding to Hb A) Higher pH. B) Lower temperature. C) Lower pCO$_{2}$. D) Higher pO$_{2}$. Show Answer Correct Answer: D) Higher pO$_{2}$. 9. Large part of nose enclosed by bone of cranium ..... A) External nares. B) Nasal chamber. C) Internal nares. D) A and c both. Show Answer Correct Answer: B) Nasal chamber. 10. Gaseous exchange takes place through diffusion membrane. Which of the following is not related to diffusion membrane. A) Its total thickness is more than a millimetre. B) Thin squamous epithelium of alveoli. C) Endothelium of alveolar capillaries. D) A basement membrane. Show Answer Correct Answer: A) Its total thickness is more than a millimetre. 11. What percentage of CO2 is transported by RBCs ..... A) 70%. B) 20-25%. C) 7%. D) 97 %. Show Answer Correct Answer: B) 20-25%. 12. Total lung capacity is: A) Total volume of air accommodated in lungs at the end a forced inspiration. B) RV + ERV + TV + IRV. C) Vital capacity + residual volume. D) All of the above. Show Answer Correct Answer: D) All of the above. 13. The carbon dioxide is transported via blood to lungs mostly A) In combination with haemoglobin only. B) Dissolved in blood plasma. C) In the form of bicarbonates. D) As carbaminohaemoglobin. Show Answer Correct Answer: C) In the form of bicarbonates. 14. Solubility of carbon dioxide is ..... times higher than that of Oxygen A) 10. B) 20. C) 40. D) 60. Show Answer Correct Answer: B) 20. 15. The oxygen dissociation curve will show a right shift in case of: A) High pCO2. B) High pO2. C) Low pCO2. D) Low H+ concentration. Show Answer Correct Answer: A) High pCO2. 16. Known as the voice box A) Windpipe. B) Larynx. C) Pharynx. D) Epiglottis. Show Answer Correct Answer: B) Larynx. 17. Normally epiglottis remains closed in which condition? A) During yawning. B) While drinking water. C) Speaking. D) A and b. Show Answer Correct Answer: B) While drinking water. 18. Approximate volume of air a healthy man can expire or inspire per minute is: A) 5000 to 6000 ml. B) 6000 to 7000 mL. C) 6000 to 8000 mL. D) 7000 to 9000 mL. Show Answer Correct Answer: C) 6000 to 8000 mL. 19. The barrier between the air in alveolus and blood in pulmonary capillary consists of 3 layers and its total thickness A) 1 mm. B) More than 1 mm. C) Much less than 1 mm. D) 2 mm. Show Answer Correct Answer: C) Much less than 1 mm. 20. Find out correct statement: A) About 97 percent of O2 is transported by RBCs in the blood. B) About 90-93 percent of CO2 is transported by RBCs is the blood. C) About 7 percent of O2 and 3 percent of CO2 is carried in dissolved form through plasma. D) More than one are correct. Show Answer Correct Answer: A) About 97 percent of O2 is transported by RBCs in the blood. 21. AccordingtoCentral Pollution Control Board (CPCB) what size (in diameter) of particulate is responsible for causing greater harmtohumanhealth? A) 3.5 micrometers. B) 2.5 micrometers. C) 4.0 micrometers. D) 3.0 micrometers. Show Answer Correct Answer: B) 2.5 micrometers. 22. Pnuemotaxic centre which can moderate the functions of the respiratory rhythm center is present at ..... ? A) Pons region of brain. B) Thalamus. C) Spinal cord. D) Right cerebral hemisphere. Show Answer Correct Answer: A) Pons region of brain. 23. When analysis of patient's blood shows high amount of carboxyhemoglobin, then which of the following summary may mostly correct? Patient may be breathing more amount of polluted air with amount of ..... A) Carbon disulfide. B) Chloroform. C) Carbon dioxide. D) Carbon monoxide. Show Answer Correct Answer: D) Carbon monoxide. 24. The maximum volume of air that can be released from the lungs by forceful expiration after deepest inspiration is called the ..... (a) Total lung capacity(b) Vital capacity(c) Tidal volume(d) Ventilation rate A) Total lung capacity. B) Vital capacity. C) Tidal volume. D) Ventilation rate. Show Answer Correct Answer: B) Vital capacity. 25. Which of the following is entirely made of cartilage ..... ? A) Nasal septum. B) Larynx. C) Glottis. D) Trachea. Show Answer Correct Answer: B) Larynx. ← PreviousNext →Related QuizzesClass 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 1Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 2Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 3Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 4Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 5Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 6Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 7Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 8Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 9Class 11 Biology Chapter 17 Breathing And Exchange Of Gases Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books