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Breathing And Exchange Of Gases

331 Questions Start Allen Test
All Exams Allen Errorless
J & K CET 2012 Q26 Errorless Process of respiration MCQ
The function of surfactant is/are
A.
Facilitating lung expansion
B.
Maintaining the stable size of the alveoli
C.
To reduce the surface tension on the alveoli
D.
All the above
Odisha JEE 2012 Q27 Errorless Critical Thinking MCQ
Number of alveoli in human lung is about
A.
One million
B.
More than two millions
C.
More than five millions
D.
More than seven millions
CBSE PMT (Pre.) 2012 Q28 Errorless Critical Thinking MCQ
Which one of the following is the correct statement for respiration in humans
A.
Cigarette smoking may lead to inflammation of bronchi
B.
Neural signals from pneumotoxic centre in pons region of brain can increase the duration of inspiration
C.
Workers in grinding and stone-breaking industries may suffer, from lung fibrosis
D.
About 90% of carbon dioxide $( C O _ { 2 } )$ is carried by haemoglobin as carbamino haemoglobin
CBSE PMT (Mains) 2011 Q29 Errorless Process of respiration MCQ
Bulk of carbon dioxide (CO2) released from body tissues into the blood is present as
A.
70% carbamino-haemoglobin and 30% as bicarbonate
B.
Carbamino-haemoglobin in RBCs
C.
Bicarbonate in blood plasma and RBCs
D.
Free $C O _ { 2 }$ in blood plasma
Kerala PMT 2011 Q30 Errorless Process of respiration MCQ
The factor which does not affect the rate of alveolar diffusion is
A.
Solubility of gases
B.
Thickness of the membrares
C.
Pressure gradient
D.
Concentration gradient
E.
Reactivity of the gases
NCERT; CBSE PMT (Pre.) 2011 Q31 Errorless Process of respiration MCQ
A large proportion of oxygen is left unused the human blood even after its uptake by the body tissue. This $O _ { 2 }$
A.
Helps in releasing more $O _ { 2 }$ to the epithelium tissues
B.
Acts as a reserve during muscular exercise
C.
Raises the ${ \mathsf { p C O } } _ { 2 }$ of blood to 75 mm of Hg
D.
Is enough to keep oxyhaemoglobin saturation at 96%
Odisha JEE 2011 Q32 Errorless Disorders of respiration system MCQ
Asthma is characterised by
A.
Spasm in bronchial muscle
B.
Alveolar wall degradation
C.
Pain in lungs
D.
Damage in diaphragm
Kerala PMT 2011 Q33 Errorless Disorders of respiration system MCQ
Congestion of the lungs is one of the main symptoms in
A.
Hypotension
B.
Coronary artery disease
C.
Angina
D.
Heart failure
E.
Atherosclerosis
CBSE PMT (Pre.) 2010 Q34 Errorless Pulmonary volumes and capacities MCQ
Listed below are four respiratory capacities (A- D) and four jumbled respiratory volumes of a normal human adult Respiratory capacities Respiratory volumes
(A) Residual volume 2500 mL
(B) Vital capacity 3500 mL
(C) Inspiratory reserve volume 1200 mL
(D) Inspiratory capacity 4500 mL Which one of the following is the correct matching of two capacities and volumes
A.
A 4500 mL, B 3500 mL
B.
B 2500 mL, C 4500 mL
C.
C 1200 mL, D 2500 mL
D.
D 3500 mL, A 1200 mL
AMU (Med.) 2010 Q35 Errorless Pulmonary volumes and capacities MCQ
The volume and surface area of a deer is $1 , 5 0 , 0 0 0 ~ c m ^ { 3 }$ and $1 9 , 0 0 0 c m ^ { 2 }$ and of a squirrel is 625 $c m ^ { 3 }$ and $5 3 0 c m ^ { 2 }$ . The area available for heat loss per cmĀ³ volume of the squirrel will be approximately
A.
Seven times more than the deer
B.
Five times less than the deer
C.
Three times more than the deer
D.
Eleven times more than the deer
DUMET 2010 Q36 Errorless Pulmonary volumes and capacities MCQ
The urge to inhale in humans results from
A.
Rising $P C O _ { 2 }$
B.
Rising $P O _ { 2 }$
C.
Falling $P C O _ { 2 }$
D.
Falling $P O _ { 2 }$
KCET 2010 Q37 Errorless Process of respiration MCQ
According to Boyle's law, the product of pressure and volume is a constant. Hence,
A.
If volume of lungs is increased, the pressure decreases, proportionately
B.
If volume of lungs is increased, the pressure also increases proportionately
C.
If volume of lungs is increased, the pressure decreases disproportionately
D.
If volume of lungs is increased, the pressure remains the same
Kerala PMT 2010; NEET 2021 Q38 Errorless Critical Thinking MCQ
The partial pressures (in mm Hg) of oxygen $( O _ { 2 } )$ and carbon dioxide (CO2) at alveoli (the site of diffusion) are
A.
$p O _ { 2 } = 4 0 $ and $p O _ { 2 } = 4 5$
B.
$p O _ { 2 } { = } 9 5$ and $p C O _ { 2 } = 4 0$
C.
$p O _ { 2 } { = } 1 5 9$ and $p C O _ { 2 } { = } 0 . 3$
D.
$p O _ { 2 } { = } 1 0 4$ and $p C O _ { 2 } { = } 4 0$
Kerala PMT 2010 Q39 Errorless Self Evaluation Test MCQ
Pick the correct statement
A.
The contraction of internal intercostal muscles lifts up the ribs and sternum
B.
The RBCs transports oxygen only
C.
The thoracic cavity is anatomically an air tight chamber
D.
Healthy man can inspire approximately 500 ml of air per minute
E.
During expiration, the intrapulmonary pressure is slightly below the surrounding atmospheric pressure
AIIMS 2010 Q40 Errorless Self Evaluation Test MCQ
Oxygen content reduction makes the glycolyse (glycogenesis) intensity increased due to
A.
Increase of ADP concentration in cell
B.
Increase of NAD+ concentration in cell
C.
Increase of ATP concentration in cell
D.
Increase of concentration of peroxides and free radicals
Odisha JEE 2009 Q41 Errorless Process of respiration MCQ
Which of the following is used for long term energy storage by animals
A.
Amino acids
B.
Glucose
C.
Fat
D.
Glycogen
DUMET 2009 Q42 Errorless Process of respiration MCQ
In hurdle race, which of the following is accumulated in the leg muscle
A.
Performed ATP
B.
Glycolysis
C.
Lactate
D.
Oxidative metabolism
AMU (Med.) 2009 Q43 Errorless Process of respiration MCQ
Which of the following sets is most correct for the catabolism of an 18 carbon fatty acid
A.
Mitochondria, beta-oxidation, 140 ATP molecules
B.
Cytosol, beta oxidation, 146 ATP molecules
C.
Mitochondria, beta oxidation, 146 ATP molecules
D.
Cytosol, beta oxidation, 140 ATP molecules
EAMCET 2009 Q44 Errorless Process of respiration MCQ
Left shift of oxyhaemoglobin curve is noticed under
A.
Normal temperature and pH
B.
Low temperature and high pH
C.
Low pH and high temperature
D.
Low pH and low temperature
AIIMS 2009 Q45 Errorless Self Evaluation Test MCQ
Which one of the following disorders and characteristic is correctly matched
A.
Cystic fibrosis Production of thick mucous that clogs airways
B.
Sickle cell anaemia ā€“ Brain deterioration beginning at months of age
C.
Achondroplasia Extra fingers or toes
D.
Huntington's disease- Skeletal, eye and cardiovascular defects
Kerala PMT 2009 Q46 Errorless Self Evaluation Test MCQ
The haeme-protein complexes which act is oxidising agents are known as
A.
Haemoglobin
B.
Myoglobin
C.
Chlorophyll
D.
Cytochrome
Kerala PMT 2009 Q47 Errorless Self Evaluation Test MCQ
Read the following statements and select the correct one
A.
The H+ released from carbonic acid combines with haemoglobin to form haemoglobinic acid
B.
Oxyhaemoglobin of erythrocytes is alkaline
C.
More than 70% of carbon dioxide is transferred from tissues to the lungs in the form of carbamino compounds
D.
In a healthy person, the haemoglobin content is more than 25 gms per 100 ml
E.
In lungs, the oxygen from the alveolus reaches the blood through active transport
Kerala PMT 2008 Q48 Errorless Respiratory organs MCQ
The diagram represents the human larynx. Choose the correct combination of labelling from the options given
A.
A ā€“ Larynx, B - Parathyroid, C ā€“ Tracheal cartilage, D ā€“ Trachea
B.
A āˆ’ Naso Larynx, B ā€“ Thyroid, C ā€“ Tracheal cartilage D - Trachea
C.
A āˆ’ Trachea, B ā€“ Thyroid, C ā€“ Bronchiole, D ā€“ Tracheal cartilage
D.
A ā€“ Epiglottis, B ā€“ Thyroid, C ā€“ Tracheal cartilage, D ā€“ Trachea
E.
A ā€“ Epiglottis, B ā€“ Parathyroid, C - Trachea, D - Tracheal cartilage
CBSE PMT 2008 Q49 Errorless Pulmonary volumes and capacities MCQ
What is vital capacity of our lungs
A.
Inspiratory reserve volume plus expiratory reserve volume
B.
Total lung capacity minus residual volume
C.
Inspiratory reserve volume plus tidal volume
D.
Total lung capacity minus expiratory reserve volume
Kerala PMT 2008 Q50 Errorless Process of respiration MCQ
The alveoli of lungs are lined by
A.
Simple epithelium
B.
Squamous epithelium
C.
Cuboidal epithelium
D.
Columnar epithelium
E.
Ciliated epithelium