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Breathing And Exchange Of Gases

331 Questions Start Allen Test
All Exams Allen Errorless
BHU 1995, 2000; CPMT 2000; DPMT 2007 Q126 Errorless Process of respiration MCQ
$O _ { 2 }$ dissociation curve is
A.
Sigmoid
B.
Slope
C.
Straight line
D.
Parabola
Bihar MDAT 1995 Q127 Errorless Process of respiration MCQ
Which of the following activity does not take place during pulmonary respiration
A.
Movement of buccal cavity
B.
Contraction and relaxation of sternohyal and pterohyal muscles
C.
Successive opening and closing of mouth and external nostrils
D.
All the above
E.
No activity takes place
CPMT 1995, 99; AFMC 2002, 08; DPMT 2003 Q128 Errorless Process of respiration MCQ
In anaerobic respiration the pyruvic acid in muscle will form
A.
Lactic acid $\{ C _ { 3 } H _ { 6 } O _ { 3 } \}$ and $H _ { 2 } O$
B.
Alcohol $( C _ { 2 } H _ { 5 } O H )$ and $H _ { 2 } O$
C.
Acetaldehyde and $H _ { 2 } O$
D.
Acetyl CoA and $H _ { 2 } O$
CBSE PMT 1995, 2006; AFMC 2006, 10; BHU 2006 Q129 Errorless Process of respiration MCQ
During respiration $C O _ { 2 }$ is transported in the form of
A.
Dissolved plasma
B.
Sodium carbonate
C.
KHCO3
D.
Partly dissolved in plasma and partly in the form of sodium and potassium bicarbonate
CPMT 1995; MP PMT 1999; RPMT 1999 Q130 Errorless Critical Thinking MCQ
Haemoglobin is having maximum affinity with
A.
$CO_2$
B.
$CO$
C.
$O_2$
D.
$NH_3$
AFMC 1994; CPMT 1995 Q131 Errorless Respiratory organs MCQ
Similarity between the trachea of cockroach and rabbit is that
A.
Both are paired and branched
B.
Ciliated epithelium is present in both
C.
Walls of both can not be deformed
D.
In both head originates from pharynx
MP PMT 1994; KCET 1999; MH CET 2000; Pb. PMT 2004; AFMC 2005 Q132 Errorless Respiratory organs MCQ
There is a membrane covering the lungs, called
A.
Peritonium
B.
Pleura
C.
Pericardium
D.
Duramater
CBSE PMT 1994 Q133 Errorless Process of respiration MCQ
The respiratory substrate yielding maximum number of ATP molecules among the following is
A.
Glycogen
B.
Amylase
C.
Ketogenic amino acid
D.
Glucose
MP PMT 1994 Q134 Errorless Process of respiration MCQ
Oxygen is transported to every cell of the body through
A.
RBC
B.
WBC
C.
RBC and WBC
D.
RBC and hormones
AFMC 1994 Q135 Errorless Disorders of respiration system MCQ
During rest, the metabolic needs of the body are at their minimum. Which of the following is indicative of this situation
A.
Rate of breathing
B.
Pulse rate
C.
$O _ { 2 }$ intake and $C O _ { 2 }$ output
D.
All of these
AFMC 1994; MP PMT 1995 Q136 Errorless Critical Thinking MCQ
Mammalian lungs have enormous number of minute alveoli (air sacs). It is to allow
A.
More space for increasing the volume of inspired air
B.
More surface area for diffusion of gases
C.
More spongy texture for keeping lungs in proper shape
D.
More nerve supply to keep organs active when working
AIMS 1994 Q137 Errorless Assertion and Reason MCQ
Assertion: Blood of insects is colourless. Reason: The blood of insects does not play any role in the transport of oxygen.
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.
CPMT 1993; MP PMT 1995 Q138 Errorless Respiratory organs MCQ
Which is a common passage in swallowing food and breathing
A.
Larynx
B.
Gullet
C.
Glottis
D.
Pharynx
CPMT 1993 Q139 Errorless Process of respiration MCQ
In expiration condition, diaphragm becomes
A.
Circular
B.
Relaxed
C.
Fully contracted
D.
Expanded
CBSE PMT 1993 Q140 Errorless Process of respiration MCQ
The breakdown product of haemoglobin is called as
A.
Iron
B.
Bilirubin
C.
Haemocynin
D.
Skatol
CBSE PMT 1993; WB JƉE 2016 Q141 Errorless Process of respiration MCQ
$C O _ { 2 }$ is dissolved in haemoglobin or blood plasma as
A.
Carbonates
B.
Bicarbonates
C.
Oxyhaemoglobin
D.
Carboxyhaemoglobin
MP PMT 1993 Q142 Errorless Process of respiration MCQ
In a minute normal man respires
A.
10 times
B.
16 times
C.
30 times
D.
4 times
AIIMS 1993 Q143 Errorless Process of respiration MCQ
In mammals how much $C O _ { 2 }$ is transported as bicarbonates of sodium and potassium in the blood
A.
5ā€“10 %
B.
10-90 %
C.
70-72 %
D.
90-95 %
AFMC 1993 Q144 Errorless Control of breathing MCQ
Breathing differs from respiration by
A.
Both are same and there is no difference
B.
Breathing refers to respiration in human beings whereas respiration occurs in rest of the animals and plants
C.
Breathing refers to chest movements due to inhalation of $O _ { 2 }$ and exhalation of carbon dioxide whereas respiration refers to gaseous exchange
D.
None fo these
CPMT 1993, 99; CBSE PMT 1994, 99; BHU 1995; AFMC 1995; RPMT 1995, 99, 2005, 06; MP PMT 1996; Pb. PMT 1999; AIIMS 2001; Kerala PMT 2010 Q145 Errorless Control of breathing MCQ
The respiratory centre in brain which controls inspiration and expiration is situated in Or Respiratory and vomitting centres are located in [MH CET 2002; DUMET 2009]
A.
Medulla oblongata
B.
Cerebellum
C.
Hypothalamus
D.
Pericardium
AIIMS 1993; BPV 2003 Q146 Errorless Critical Thinking MCQ
When a man inhales air containing normal concentration of $O_2$ as well as CO he suffers from suffocation because
A.
CO reacts with $O_2$ reducing its percentage in air
B.
Haemoglobin combines with CO instead of $O_2$ and the product cannot dissociate
C.
CO affects diaphragm and intercostal muscles
D.
CO affects the nerve of the lungs
CPMT 1993 Q147 Errorless Critical Thinking MCQ
Rate of respiration is directly proportional to
A.
Concentration of oxygen in blood
B.
Concentration of carbon dioxide in blood
C.
Oxygen in trachea
D.
Diaphragm expansion
CMC Vellore 1993; AIIMS 1993; BHU 2001, 08; JIPMER 2002; MP PMT 2007, 09, 10 Q148 Errorless Critical Thinking MCQ
Hamburger phenomenon is also known as
A.
Hydrogen shift mechanism
B.
Chloride shift mechanism
C.
Carbonic acid shift mechanism
D.
Sodium-potassium pump
DPMT 1993 Q149 Errorless Self Evaluation Test MCQ
Which of the following disease is associated with lungs
A.
Bronchitis
B.
Pneumonia
C.
Asthama
D.
All the above
CPMT 1992, 93; BHU 2002 Q150 Errorless Respiratory organs MCQ
The cartilage present in the larynx of rabbit are
A.
Thyroid, cricoid, arytenoid
B.
Thyroid, cricoid, epiglottis
C.
Thyroid, cricoid, ethmoid
D.
Thyroid, cricoid, palatine