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This section includes 32 Mcqs, each offering curated multiple-choice questions to sharpen your Maharashtra CET knowledge and support exam preparation. Choose a topic below to get started.
1. |
Over-breathing can be countered through |
A. | in breath longer than out breath |
B. | out breath longer than in breath |
C. | excessive breathing |
D. | holding breath |
Answer» C. excessive breathing | |
2. |
Alveolar walls are |
A. | a lining of single cells |
B. | a lining of multiple cells |
C. | are a lining of palisade cells |
D. | depend on the age of organism |
Answer» B. a lining of multiple cells | |
3. |
Cuticular respiration is important to |
A. | reduce stomatal respiration |
B. | continue transpiration pull |
C. | move in night |
D. | help plant survive heat |
Answer» D. help plant survive heat | |
4. |
Dry mass is lost through |
A. | lenticels |
B. | respiration |
C. | stomata |
D. | limiting factor of enzymes |
Answer» C. stomata | |
5. |
Front ribs are attached to the |
A. | diaphragm |
B. | sternum |
C. | external intercostal muscles |
D. | internal intercostal muscles |
Answer» C. external intercostal muscles | |
6. |
A human body removes most of water through |
A. | urination |
B. | breathing |
C. | sweating |
D. | working hard |
Answer» B. breathing | |
7. |
Carbon dioxide is removed from |
A. | anus as feces |
B. | lungs while inhaling |
C. | lungs while exhaling |
D. | kidneys |
Answer» D. kidneys | |
8. |
Every single cell of body requires |
A. | oxygen only |
B. | food only |
C. | carbon dioxide and food |
D. | oxygen and food |
Answer» E. | |
9. |
In respiration, raw material is converted into |
A. | water only |
B. | carbon dioxide and energy |
C. | water and energy |
D. | water, carbon dioxide and energy |
Answer» E. | |
10. |
In respiration raw products are |
A. | oxygen and carbon |
B. | oxygen and food |
C. | oxygen and glucose |
D. | food and carbon |
Answer» D. food and carbon | |
11. |
In the resting person, saturation of hemoglobin as blood leaves the tissue capillaries is approximately |
A. | 75% |
B. | 25% |
C. | 50% |
D. | 100% |
Answer» B. 25% | |
12. |
When blood contains a high percentage of carbon dioxide and a very low percentage of oxygen the breathing stops and the person become unconscious. This condition is known as |
A. | suffocation |
B. | emphysema |
C. | asphhyxia |
D. | eupnea |
Answer» D. eupnea | |
13. |
End product of anaerobic respiration in humans is |
A. | ethyl alcohol |
B. | lactic acid |
C. | ethyl alcohol +CO2 |
D. | lactic acid + CO2 |
Answer» E. | |
14. |
Which one of the following can bind several hundred times more strongly to the hemoglobin than oxygen? |
A. | CO2 |
B. | CO |
C. | SO2 |
D. | H2CO3 |
Answer» C. SO2 | |
15. |
What is true about RBCs in humans? |
A. | they carry about 20-25% of carbon dioxide |
B. | they transport 99.5% of oxygen |
C. | they do not carry carbon dioxide at all |
D. | they transport about 80% Oxygen only and the rest 20% of it is transported in dissolved state in blood plasma |
Answer» B. they transport 99.5% of oxygen | |
16. |
Lack of pulmonary surfactant produces |
A. | asthma |
B. | respiratory distress syndrome |
C. | cystic fibrosis |
D. | emphysema |
Answer» E. | |
17. |
Hamburger’s phenomenon explains |
A. | chloride shift |
B. | breathing mechanism |
C. | oxygen saturation of hemoglobin |
D. | formation of HCO3- |
Answer» B. breathing mechanism | |
18. |
During inspiration, the diaphragm |
A. | shows no change |
B. | expands |
C. | contracts and flattens |
D. | relaxes to become dome shaped |
Answer» D. relaxes to become dome shaped | |
19. |
Which one of the following is a possibility for most of us in regard to breathing, by making a conscious effort? |
A. | One can consciously breathe in and breathe out by moving the diaphragm alone, without moving the ribs at all |
B. | The lungs can be made fully empty by forcefully breathing out all air from them |
C. | One can breathe out air totally without oxygen |
D. | One can breathe out air through eustachian tubes by closing both the nose and the mouth |
Answer» B. The lungs can be made fully empty by forcefully breathing out all air from them | |
20. |
Which one of the followings is correct regarding larynx? |
A. | It prevents foreign objects from entering the trachea |
B. | It houses the vocal cords |
C. | It is an organ made of cartilage and connects the pharynx to the trachea |
D. | All of these are correct. |
Answer» E. | |
21. |
Which one of the followings is NOT correct regarding Exhalation (expiration)? |
A. | Expiration is typically a passive process |
B. | Exhalation starts when the expiratory muscles relax |
C. | The elastic properties of the lung help to expel deoxygenated air during exhalation |
D. | During exhalation, elastic properties of the lung help to expel deoxygenated air |
Answer» C. The elastic properties of the lung help to expel deoxygenated air during exhalation | |
22. |
Which one of the following statements is incorrect? |
A. | Tuberculosis is caused by a rod-shaped bacterium, Mycobacterium tuberculosis. |
B. | Tuberculosis is highly infectious and can be spread by airborne droplets |
C. | Tuberculosis cant be treated by antibiotics |
D. | In Pulmonary Tuberculosis the elasticity of lungs is reduced |
Answer» D. In Pulmonary Tuberculosis the elasticity of lungs is reduced | |
23. |
Which one of the following statement is NOT correct regarding trachea? |
A. | It usually lies posterior to the muscular esophagus. |
B. | It splits into the right and left bronchi to supply air to the lungs |
C. | Opening to the trachea is covered by epiglottis. |
D. | Tracheal rings are C-shaped |
Answer» B. It splits into the right and left bronchi to supply air to the lungs | |
24. |
Inner surface of the bronchi, bronchioles and fallopian tubes are lined by |
A. | Cubical epithelium |
B. | Columnar epithelium |
C. | Squamous epithelium |
D. | Ciliated epithelium |
Answer» E. | |
25. |
Listed below are four respiratory capacities (a - d) and four jumbled respiratory volumes of a normal human adult Respiratory capacities Respiratory volumes (a) Residual volume 2500 mL (b) Vital capacity 3500 mL (c) Inspiratory reserve volume 1200 mL (d) Inspiratory capacity 4500 mL Which one of the following is the correct matching of two capacities and volumes? |
A. | (a) 4500 mL, (b) 3500 mL |
B. | (b) 2500 mL, (c) 4500 mL |
C. | (c) 1200 mL, (d) 2500 mL |
D. | (d) 3500 mL, (a) 1200 mL |
Answer» E. | |
26. |
The trachea divides into two smaller tubes called ______. |
A. | Bronchi |
B. | Trachea |
C. | Microtrachea |
D. | Eustachian tubes |
Answer» B. Trachea | |
27. |
Which one is the cofactor of carbonic anhydrase? |
A. | Cu |
B. | Zn |
C. | Fe |
D. | Mg |
Answer» C. Fe | |
28. |
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 |
Answer» C. Tidal volume | |
29. |
Aerobic respiratory pathway is also termed as ______ pathway. |
A. | Anabolic |
B. | Catabolic |
C. | Creatine phosphate |
D. | Amphibolic |
Answer» E. | |
30. |
The maximum volume of air contained in the lung by a full forced inhalation is called |
A. | Vital capacity |
B. | Tidal volume |
C. | Total lung capacity |
D. | Inspiratory capacity |
Answer» D. Inspiratory capacity | |
31. |
The exchange of gases between inhaled air and blood is referred as ______. |
A. | Cellular respiration |
B. | External respiration |
C. | Internal respiration |
D. | Circulatory respiration |
Answer» C. Internal respiration | |
32. |
Opening to the trachea is covered by a small flap of tissues termed as the ______. |
A. | Glottis |
B. | Trachea |
C. | Epiglottis |
D. | Larynx |
Answer» D. Larynx | |