MCQOPTIONS
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MCQOPTIONS
This section includes 68 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Tissue respiration is also referred as |
| A. | internal respiration |
| B. | external respiration |
| C. | gaseous exchange |
| D. | breathing |
| Answer» B. external respiration | |
| 52. |
Oxygen combines with hemoglobin in blood and form |
| A. | oxyhemoglobin |
| B. | deoxyhemoglobin |
| C. | hemoglobin |
| D. | carbohemoglobin |
| Answer» B. deoxyhemoglobin | |
| 53. |
Sheet of skeletal muscles which are present in chest is |
| A. | permeability to lipids |
| B. | permeability to certain ions |
| C. | permeability to proteins |
| D. | permeability to free radicals |
| Answer» D. permeability to free radicals | |
| 54. |
Double layered thin membranous sacs which covers lung are called |
| A. | bronchioles |
| B. | bronchi |
| C. | bronchus |
| D. | pleura |
| Answer» E. | |
| 55. |
Tobacco weakens walls of |
| A. | alveoli |
| B. | bronchi |
| C. | bronchioles |
| D. | bronchus |
| Answer» B. bronchi | |
| 56. |
Complex cartilaginous structure present at upper end of trachea is called |
| A. | pharynx |
| B. | larynx |
| C. | glottis |
| D. | epiglottis |
| Answer» C. glottis | |
| 57. |
Mechanical process which consists of two phases inspiration and expiration is called |
| A. | respiration |
| B. | breathing |
| C. | photosynthesis |
| D. | translocation |
| Answer» C. photosynthesis | |
| 58. |
In a tobacco leaf, there are 12000 stomata per square |
| A. | meter |
| B. | centimeter |
| C. | millimeter |
| D. | micrometer |
| Answer» C. millimeter | |
| 59. |
Glycolate is converted into glycine with in |
| A. | ribosome |
| B. | mitochondria |
| C. | peroxisomes |
| D. | axioms |
| Answer» D. axioms | |
| 60. |
Capacity of lungs while sleeping for gaseous exchange is |
| A. | 4 liters |
| B. | half liters |
| C. | 2 liters |
| D. | 6 liters |
| Answer» C. 2 liters | |
| 61. |
Conducting tissues which help in transportation are |
| A. | xylem |
| B. | phloem |
| C. | Both a and b |
| D. | roots and phleom |
| Answer» D. roots and phleom | |
| 62. |
Steep diffusion gradient is maintained by |
| A. | diffusion |
| B. | respiration |
| C. | ventilation |
| D. | transpiration |
| Answer» D. transpiration | |
| 63. |
Ribs are elevated when muscles between ribs are |
| A. | relaxed |
| B. | contracted |
| C. | dilated |
| D. | expanded |
| Answer» C. dilated | |
| 64. |
Respiration at organism level is known as |
| A. | breathing |
| B. | ventilation |
| C. | Both a and b |
| D. | inhalation |
| Answer» D. inhalation | |
| 65. |
In humans' ciliated epithelium, mucus membrane filter foreign particles to enter in |
| A. | oral cavity |
| B. | nasal cavity |
| C. | buccal cavity |
| D. | digestive tract |
| Answer» C. buccal cavity | |
| 66. |
Tiny thin walled ducts which are present in lungs of birds are called |
| A. | alveoli |
| B. | bronchi |
| C. | parabronchi |
| D. | bronchioles |
| Answer» D. bronchioles | |
| 67. |
Respiration which takes place during day time is called |
| A. | aerobic |
| B. | respiration |
| C. | photorespiration |
| D. | anaerobic |
| Answer» D. anaerobic | |
| 68. |
Dome-shaped part under chest is called |
| A. | lungs |
| B. | bronchi |
| C. | diaphragm |
| D. | alveoli |
| Answer» D. alveoli | |