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Breathing and Respiration
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Breathing and Respiration
mcqs by everyone
SARS is caused by variant of
asthma
Pneumococcus pneumonia
Common cold and Corona virus
bronchitis
Oxygen dissociation curve of haemoglobin is
Sigmoid
Hypobolic
Hyperbolic
Linear
Respiratory centre of brain is stimulated by
Oxygen content in arterial blood
Oxygen content in venous blood
Carbon dioxide content in venous blood
Carbon dioxide content in arterial blood
Carbon dioxide entering erythrocytes reacts with water to form carbonicacid.
the enzyme is
Hydrolase
Carbonic anhydrase
Carboxypeptidase
Oxidoreductase
Teh alveolar epithelium in the lung is
Non-ciliated squamous
ciliated columnar
ciliated squamous
Non-ciliated columnar
Percentage of oxygen being carried by blood plasma is
2 -3%
6 - 9%
3 - 6%
1 -2%
Oxygen and carbon dioxide is transported in blood through
WBCs and serum
RBCs and plasma
Platelets and corpuscles
RBCs and WBCs
Vocal cord occur in
glottis
Pharynx
Bronchial tube
Larynx
According to Boyle's law, the product of pressure and volume is constant, hence
If volume of lung is increased, the pressure also increases proportionately
If volume of lungs is increased, the pressure remains the same
If volume of lung is increased, the pressure decreases disproportionately
If volume of lung is increased, the pressure decreases proportionately
Alveoli become enlarged and damaged with reduced surface area in heavysmokers.
the condition is called
asthma
Silicosis
bronchitis
emphysema
At higher CO2concentration.
oxygen dissociation curve of haemoglobin will
Move upwardly
Move to left
Become irregular
Move to right
At a given O2 concentration, dissociation of oxyhaemoglobin will increase if
pH of blood falls
pH of blood rises
Free fatty acid concentration of blood falls
CO2 concentration of blood falls
Emphysema is characterised by
Increased number of air sacs
Inflation of alveoli
Pulmonary hemorrhage
Infection of Mycobacterium tuberculosis
Approximately seventy percent of carbon dioxide absorbed by the blood will be
transported to the lungs:
by binding to R.B.C
in the form of dissolved gas molecules
as bicarbonate ions
as carb amino - haemoglobin
In alveolar air, partial pressure of CO2 is
44 mmHg
40 mmHg
42 mmHg
Partial pressure below arterial
p
O2 causes
Formation of bicarbonate
Releases of CO2 from the cell
Production of carbonic acid
Formation of carbaminohaemoglobin
Skin is an accessory organ of respiration in
Frog
Rabbit
lizard
humans
In which of the following in which the iron in the heme group is in the Fe3+ (ferric) state
Carbaminohaemoglobin
Haemoglobin without oxygen
Oxyhaemoglobin
Methaemoglobin
Enzyme essential for transport of CO2 as bicarbonate in blood is
Caboxypeptidase
thrombokinase
Succinic dehydrogenase
Carbonic anhydrase
Assertion : Haemoglobin is an oxygen carrier
Reason : Oxygen binds as O2- to Fe of haemoglobin
Assertion is true but, Reason is false
Assertion is false but, Reason is true
Both Assertion and Reason are true and Reason is the correct explanation of Assertion
The Assertion and Reason are true but Reason is not correct explanation of Assertion
Fish brought out of water dies because of
Inability to respire
Inability to feed
rise in temperature
Absence of pressure
Match the columns ..
Column I
Column II
(a) Asthma
(p) Recurring of bronchitis
(b) Emphysema
(q) Accumulation of WBCs in alveoli
(c) Pneumonia
(r) Allergy
a - r; b - q; c - p
a - q; b - r; c - p
a - r; b - p; c - q
a - q; b - p; c - r
Respiratory system is derived from
Endoderm
Ectoderm
None of the above
Mesoderm
Respiratory membrane consists of ..... [
Alveolar wall and ducts
Membranes of alveolar ducts and capillaries
Alveolar wall, alveolar capillary and interstitial space
Body tissues obtain oxygen from haemoglobin because of its dissociation in tissues caused by
Low carbon dioxide concentrtion
High carbon dioxide concentrtion
Low oxygen concentration and high carbon dioxide concentration
Low oxygen concentration
Whether a child died after birth or died before birth can be confirmed by measuring
Dead space air
Residual volume of air
Tidal volume
Weight of child
Diffusion of oxygen in tissues of cockroach occurs through
Blood
Tracheoles
Integument
Tracheae
Bicarbonate formed inside erythrocytes passes out into plasma while chloride of plasma pass intoerythrocytes.
the phenomenon is called
carbonation
Bicarbonate shift
Hamburger phenomenon
Carbochlorosis
When oxygen supply to tissue is inadequate, the condition is
Hypoxia
Apnoea
Asphyxia
Dyspnoea
Rate of respiration is directly affected by
concentration of carbon dioxide
Oxygen in trachea
Diaphragm expansion
Concentration of oxygen
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