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Breathing And Exchange Of Gases

331 Questions Start Allen Test
All Exams Allen Errorless
CPMT 2005 Q76 Errorless Control of breathing MCQ
Which of the following conditions is responsible for increase in ventilation rate of lungs
A.
Increase of $C O _ { 2 }$ content in inhaled air
B.
Increase of $C O _ { 2 }$ content in exhaled air
C.
Decrease of $O _ { 2 }$ content in inhaled air
D.
Decrease of $O _ { 2 }$ content in exhaled air
J & K CET 2005 Q77 Errorless Control of breathing MCQ
A substance that prevents or delays oxidation is
A.
Bactericidal
B.
Hormone
C.
Antioxidant
D.
Enzyme
Kerela CET 2005 Q78 Errorless Control of breathing MCQ
Rate of breathing is controlled by
A.
The amount of freely available oxygen
B.
Carbon dioxide
C.
Muscular function of the body
D.
Stress
BHU 2005 Q79 Errorless Disorders of respiration system MCQ
After taking a long deep breath we do not respire for some seconds due to
A.
More $C O _ { 2 }$ in blood
B.
More $O _ { 2 }$ in blood
C.
Less $C O _ { 2 }$ in blood
D.
Less $O _ { 2 }$ in blood
CPMT 2005 Q80 Errorless Disorders of respiration system MCQ
Ascent of high mountains may cause altitude sickness in men. Prime cause of this is
A.
Excess of $C O _ { 2 }$ in blood
B.
Decreased efficiency of haemoglobin
C.
Decreased partial pressure of oxygen
D.
Decreased proportion of oxygen in air
BHU 2004; CPMT 2010 Q81 Errorless Process of respiration MCQ
During inspiration the diaphragm
A.
Relaxes to become dome-shaped
B.
Contracts and flattens
C.
Expands
D.
Shows no change
Kerala PMT 2004 Q82 Errorless Process of respiration MCQ
Of the following, the one which is an example of buffer system in blood is
A.
Haemoglobin and oxyhaemoglobin
B.
Oxygen and carbon dioxide
C.
Albumin and globulin
D.
Sodium bicarbonate and carbonic acid
Odisha JEE 2004 Q83 Errorless Process of respiration MCQ
Which is true for $C O _ { 2 }$ concentration
A.
More in alveolar air than in expired air
B.
More in expired air than in alveolar air
C.
More in inspired air than in expired air
D.
More in inspired air than in alveolar air
CPMT 2004 Q84 Errorless Control of breathing MCQ
When CO2 concentration in blood increases, breathing becomes
A.
Slow and deep
B.
Faster and deeper
C.
Shallower and slow
D.
There is no effect on breathing
Odisha JEE 2004 Q85 Errorless Control of breathing MCQ
Respiratory centre of brain is sensitive to
A.
More $O _ { 2 }$ conc. in blood
B.
More CO2 conc. in blood
C.
Accumulation of blood in brain
D.
All of these
CPMT 2004 Q86 Errorless Disorders of respiration system MCQ
Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct
A.
Carbon dioxide
B.
Carbon monoxide
C.
Carbon disulphide
D.
Chloroform
AIEEE Pharmacy 2004; RPMT 2005 Q87 Errorless Disorders of respiration system MCQ
Ravi, who lived at sea level, had around 5 million RBC per cubic millimeter of his blood. Later when he lived at an altitude of 18,000 ft, showed around 8 million RBC per cubic millimeter of blood. This is an adaptation because
A.
At high altitude he ate more nutritive food
B.
He had pollution free air to balance breathe
C.
At high altitude $O _ { 2 }$ level is less hence more RBCs were required to absorb enough oxygen
D.
At high altitude there is more UV radiation which enhances RBCs production
BHU 2004 Q88 Errorless Disorders of respiration system MCQ
The oxygen toxicity is related with
A.
Blood poisoning
B.
Collapse of alveolar walls
C.
Failure of ventilation of lungs
D.
Both
Kerala CET 2003 Q89 Errorless Respiratory organs MCQ
Which one of the following has the smallest diameter
A.
Right primary bronchus
B.
Left primary bronchus
C.
Trachea
D.
Respiratory bronchiole
MH CET 2003 Q90 Errorless Respiratory organs MCQ
In which animal, diaphragm has no role in respiration
A.
Frog
B.
Rat
C.
Camel
D.
Rabbit
BVP 2003 Q91 Errorless Process of respiration MCQ
The function of tracheal hair is to
A.
Pass mucus out
B.
Pass mucus in
C.
Pass air out
D.
Pass air in
DPMT 2003; BVP 2004 Q92 Errorless Control of breathing MCQ
How much amount of air can be inspired or expired during normal breathing
A.
0.51
B.
2.51
C.
1.51
D.
5.51
Kerala CET 2003 Q93 Errorless Critical Thinking MCQ
True organ of sound production in birds is
A.
Larynx
B.
Sound box
C.
Vocal sac
D.
Syrinx
AIIMS 2003 Q94 Errorless Assertion and Reason MCQ
Assertion: Severe Acute Respiratory Syndrome (SARS) originated in China. Reason: China is the most populated country of the world.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.
CBSE PMT 2002; BVP 2002 Q95 Errorless Respiratory organs MCQ
Which of the following is a respiratory organ of scorpion
A.
Gill
B.
Lung
C.
Ctenidia
D.
Book lung
MP PMT 2002 Q96 Errorless Process of respiration MCQ
If concentration of $C O _ { 2 }$ is more the curve of oxygen will shift towards Or Increase in body temperature makes oxygen haemoglobin dissociation curve shift to [BHU 2012]
A.
Right
B.
Left
C.
Central
D.
None of these
JIPMER 2002 Q97 Errorless Process of respiration MCQ
Intra aortic balloon pump is inflated by
A.
Hydrogen
B.
Oxygen
C.
Helium
D.
Chlorine
Kerala CET 2002; BHU 2008 Q98 Errorless Control of breathing MCQ
The air which is taken in or given out during a single breath is known as
A.
Residual air
B.
Vital air
C.
Tidal air
D.
All of these
BHU 2002 Q99 Errorless Control of breathing MCQ
The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen, approximately by
A.
2 times
B.
20 times
C.
200 times
D.
1000 times
CBSE PMT 2001 Q100 Errorless Respiratory organs MCQ
During forced expiration, actively contracting muscles include the
A.
Diaphragm
B.
External intercostals
C.
Abdominal muscles
D.
Diaphragm and intestinal muscle