NEET UG Breathing and Exchange of Gases — practice questions
37 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEET UG Breathing and Exchange of Gases in the app →Gas exchange between alveolar air and blood is driven byVital capacity of the lungs is the sum ofDuring quiet inspiration, the diaphragmThe actual exchange of O₂ and CO₂ between blood and air happens at theWhich structure belongs to the conducting (not respiratory) zone?Insects breathe throughDuring quiet inspiration, the diaphragmResidual volume (RV) isSurfactant in the alveoliOne haemoglobin molecule can carry a maximum of how many oxygen molecules?Most CO₂ is transported in the blood asThe Bohr effect refers to the shift of the O₂-Hb dissociation curve to the RIGHT whenThe basic respiratory rhythm is generated in theEmphysema is most commonly caused byCarbon monoxide poisoning is dangerous because COA sponge has no lungs or gills. It exchanges gases by:An earthworm breathes through its:A frog can also breathe through its moist skin. This is called:The pharynx is a passage shared by:The larynx is called the sound box because it helps in:While you swallow, a flap covers the glottis so food does not enter the larynx. The flap is the:The trachea and bronchi stay open because they are supported by incomplete rings of:The tiny thin-walled bags at the end of each terminal bronchiole are the:Air enters the lungs when the pressure inside the lungs is:External intercostal muscles contract and:A healthy adult at rest breathes about ___ times a minute.The device that measures the volumes of air moved in breathing is a:The air you breathe in or out in one normal breath, about 500 mL, is the:After a normal breath you force in extra air. That extra amount is the:Gases cross from alveoli to blood mainly by:About 97 percent of oxygen in blood is carried by:Haemoglobin is red because it contains:Oxygen binds haemoglobin in the lungs and leaves it at the:Every 100 mL of oxygenated blood delivers about ___ of oxygen to the tissues.The enzyme in red cells that speeds up carbon dioxide and water turning into bicarbonate is:Wheezing from inflamed bronchi and bronchioles is:A stone-crusher works for years in dust and develops lung fibrosis. Such workers should wear: