Respiration MCQ Questions and Answers for Practice

1. In human beings , partial pressure of carbon dioxide in the inspired and expired air respectively

1. 0.3 and 40 mm Hg
2. 0.3 and 32 mm Hg
3. 40 and 46 mm Hg
4. 40 and 0.3 mm Hg

2. Partial pressure of O2 in the inspired air is 156 mm Hg and that of CO2 is

1. 0.3 mm Hg
2. 0.5 mm Hg
3. 140 mm Hg
4. 46 mmHg

3. Residual volume of the lung is

1. 1200 ml
2. 1500 ml
3. 4500 ml
4. 500 ml

4. Partial pressure of Oxygen in the inspired and expired air is respectively

1. 158 and 116 mm Hg
2. 158 and 40 mm Hg
3. 100 and 95 nn Hg
4. 40 and 95 mm Hg

5. Tidal volume in Man is

1. 500 ml
2. 1500 ml
3. 1200 ml
4. 4500 ml

6. Which of the following Hormone is secreted in excess when a person climbing a mountain

1. Anti Natriuretic Factor
2. Adrelaline
3. Erythropoietin
4. Thyroxine

7. Semilunar cartilage inside the Laryngo tracheal chamber is

1. Arytenoid
2. Cricoid
3. Sternohyal
4. Petrohyal

8. Plastron is the air bubble carrying respiratory air in the abdomen of

1. Belostoma
2. Nepa ( Water boat man )
3. Chironomous
4. Mosquito

9. 2,3 DPG ( Diphospho glycerate ) is an important molecule that compete for Oxygen binding sites ofHemoglobin. It is present in

1. Blood Plasma
2. Erythrocytes
3. Leucocytes
4. Blood of lungs

10. Chlorocruorin is a copper containing blood pigment found in some annelids like Sabell. Its colour in bothoxygenated and deoxygenated states is

1. Blue
2. Red
3. Green
4. Blue red

11. Respiratory Quotient is not less than one in

1. Carbohydrates
2. Proteins
3. Fats
4. Normal diet

12. Rectal respiration is seen in

1. Cockroach
2. Spider
3. Niads of Dragon fly
4. Water flea

13. Bovine tuberculosis is transmitted from cow to man through

1. Contact
2. Milk
3. Contamination of water with infected urine
4. Meat

14. Wall of Larynx is supported by the cartilage

1. Cricoid
2. Thyroid
3. Artynoid
4. All these

15. The combination of Hemoglobin with Oxygen in the blood can be promoted by

1. Decreasing O2 concentration
2. Increasing O2 concentration
3. Increasing CO2 concentration
4. Decreasing CO2 concentration