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Free download in PDF Breathing and Exchange of Gases Objective Type Questions with Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
How much percent of CO2 is expired?
[A]
7%
[B]
32%
[C]
25%
[D]
20%
(2)
When CO2 concentration in blood increased breathing becomes ____________
[A]
shallower and deeper
[B]
slow and deep
[C]
faster and deeper
[D]
no effect on breathing
Answer: faster and deeper
(3)
The oxygen toxicity is related to _________
[A]
Blood poisoning
[B]
Failure of ventilation of lungs
[C]
Collapsing of the alveolar wall
[D]
Improper functioning of alveoli
Answer: Failure of ventilation of lungs
(4)
Carbon dioxide cannot be transported with hemoglobin.
(5)
After deep inspiration maximum expiration of lungs is called ________
[A]
Vital capacity
[B]
Total lung capacity
[C]
Inspiratory capacity
[D]
Functional residual capacity
(6)
Pulmonary ventilation movements are due to __________
[A]
Costal muscles and diaphragm
[B]
Diaphragm
[C]
Wall of lungs
[D]
Costal muscles
Answer: Costal muscles and diaphragm
(7)
If RQ is 0.6 in a respiratory metabolism it would mean that _________
[A]
Carbohydrate is used as respiratory substrate
[B]
Organic acids are used as respiratory substrate
[C]
Oxidation of respiratory substrate consumed more O2 than CO2 produced
[D]
Reaction is anaerobic
Answer: Oxidation of respiratory substrate consumed more O2 than CO2 produced
(8)
Partial pressure of oxygen in lungs is ____________
[A]
60 mm Hg
[B]
40 mm Hg
[C]
110 mm Hg
[D]
100 mm Hg
(9)
Vital capacity of lung is __________
[A]
TV+IRV+ERV
[B]
TV+IRV+RV
[C]
TV+ERV
[D]
IRV+ERV
(10)
Hamburger shift is also known as ___________
[A]
Bicarbonate shift
[B]
Chloride shift
[C]
Potassium shift
[D]
Sodium shift
(11)
Amount of CO2 in expired air is _________
[A]
0.04%
[B]
0.03%
[C]
3.6%
[D]
21%
(12)
Dead space air in man is __________
[A]
500ml
[B]
150ml
[C]
250ml
[D]
None of these
(13)
Total lung capacity is _____________
[A]
5000-6000ml
[B]
2500-5000ml
[C]
4000-5500ml
[D]
3000-6000ml
(14)
Which is true for carbon dioxide concentration?
[A]
More in alveolar air than in expired air
[B]
More in inspired air than in alveolar air
[C]
More in expired air than in alveolar air
[D]
More in alveolar air than in inspired air
Answer: More in alveolar air than in expired air
(15)
One molecule of hemoglobin carries ___________ molecules of oxygen.
(16)
Maximum amount of oxygen is exchanged from blood in ___________
[A]
Arteries of the body
[B]
Capillaries surrounding the alveoli
[C]
Left auricle of the heart
[D]
Arteries of the body
Answer: Capillaries surrounding the alveoli
(17)
Residual volume is _______________
[A]
Lesser than tidal volume
[B]
Greater than vital capacity
[C]
Greater than inspiratory volume
[D]
Greater than tidal volume
Answer: Greater than tidal volume
(18)
Oxygen dissociation curve is _________
[A]
Parabolic
[B]
Hyperbolic
[C]
Sigmoid
[D]
Straight
(19)
RQ is one in case of ____________
[A]
Fatty acids
[B]
Nucleic acids
[C]
Organic acids
[D]
Carbohydrates
(20)
Oxygen is mainly transported as ____________
[A]
Oxyhemoglobin
[B]
Hemo-oxyglobin
[C]
Hemoglobin
[D]
Oxynoglobin
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