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NEET Biology MCQ
Breathing And Respiration Mcq
Quiz 13
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Q.1
CO2 is transported ... ....
0%
a) As carbonic acid
0%
b) In carbaminohaemoglobin
0%
c) As carbaminolaemoglobin and carbonic acid
0%
d) dissolved in blood plasma
Explanation
Answer:(c)
Q.2
A molecule of haemoglobin carries how many oxygen molecules
0%
a) 1
0%
b) 2
0%
c) 3
0%
d) 4
Explanation
Answer:(d)
Q.3
Gases diffuse over the respiratory surface because of (Manipal 2002)
0%
a) O2 is more in alveoli than in blood
0%
b) O2 is more in blood than in tissues
0%
c) CO2 is more in alveoli than in blood
0%
d) PCO2 is more in blood than in tissues
Explanation
Answer:(a)
Q.4
During inspiration ... ...
0%
a) Diaphragm and internal intercostal muscles contract
0%
b) Diaphragm and external intercostal muscles contract
0%
c) Diaphragm and external muscles relax
0%
d) Diaphragm and internal intercostal muscles relax
Explanation
Answer:(b)
Q.5
Percenatage of oxygen being carried by blood plasma is ... ....
0%
a) 6-9%
0%
b) 3-6%
0%
c) 2-3%
0%
d) 1-2%
Explanation
Answer:(c)
Q.6
At high altitude, RBCs of human blood will ... ....
0%
a) Increase in number
0%
b) Increase in size
0%
c) Decrease in number
0%
d) Decrease in size
Explanation
Answer:(a)
Q.7
Vocal cords occur in
0%
a) Bronchial tube
0%
b) Larynx
0%
c) Glottis
0%
d) Pharynx
Explanation
Answer:(b)
Q.8
Thoracic cage of man is formed of ... ...
0%
a) Ribs and thoracic vertebrae.
0%
b) Ribs and sternum
0%
c) Ribs,sternum and lumbar vertebrae
0%
d) Ribs,sternum and thoracic vertebrae
Explanation
Answer:(d)
Q.9
Capacity of human lungs for air in a healthy person is (Orissa 2005)
0%
a) 3000 ml
0%
b) 1500 ml
0%
c) 1000 ml
0%
d) 500 ml
Explanation
Answer:(a)
Q.10
Make the correct pairs.
Columan-I
Column-II
(a) Tidal volume
i. 1000 to 1100 ml
(b) Residual volume
ii. 500 ml
(c) Expiratory reserve volume
iii. 2500 to 3000 ml
(d) Inspiratory reserve volume
iv. 1100 to 1200 ml
0%
a) a = ii, b = iv, c = i, d = iii
0%
b) a = iii, b = i, c = ii , d= iii
0%
c) a = ii, b = iii, c = i, d = iv
0%
d) a = ii, b = i, c = iii, d= iv
Explanation
Answer:(a)
Q.11
In which disease lung tissue degenerate?
0%
a) Pneumonia
0%
b) Emphysema.
0%
c) Asthma
0%
d) Bronchitis
Explanation
Answer:(b)
Q.12
During respiration......
0%
a) O2 is produced and CO2 is consumed
0%
b) O2 is consumed and CO2 is produced
0%
c) Both O2 and CO2 are produced
0%
d) Both O2 and CO2 are consumed.
Explanation
Answer:(b)
Q.13
The muscles present between ribs are called
0%
a) Intercoslal muscles
0%
b) Phrenic muscles
0%
c) Cardiac muscles
0%
d) Voluntary muscles.
Explanation
Answer:(a)
Q.14
Flattening of alveolar ducts (tracheal vessels) results in
0%
a) Asthma
0%
b) Emphysema
0%
c) Lung cancer
0%
d) Bronchitis.
Explanation
Answer:(b)
Q.15
Blockage in respiratory passage in humans is prevented due to the presence of
0%
a) Larynx
0%
b) Epiglottis
0%
c) ‘C’ shaped cartilagenous rings.
0%
d) Alveoli
Explanation
Answer:(c)
Q.16
Hamburger’s phenomenon is also known as .....
0%
a) HCO3– shift
0%
b) Na+ shift
0%
c) H+ shift
0%
d) Chloride shift
Explanation
Answer:(d)
Q.17
Volume of air breathed in and out during effortless respiration is (Kerala 2001)
0%
a) vital volume
0%
b) residual volume
0%
c) normal volume
0%
d) tidal volume
Explanation
Answer:(d)
Q.18
Hiccough (hiccup) is due to activity of ... ....
0%
a) Intercostal muscles
0%
b) Food in air tract
0%
c) Diaphragm
0%
d) Inadequate oxygen in environment
Explanation
Answer:(c)
Q.19
SARS is caused by a variant of ... ...
0%
a) Pneumococcus pneumonia
0%
b) Common cold by Corona virus
0%
c) Asthma
0%
d) Bronchitis
Explanation
Answer:(b)
Q.20
How much pulmonary air is expired normally (Har.P.M.T.2005)
0%
a) 70%
0%
b) 20%
0%
c) 25%
0%
d) 32%
Explanation
Answer:(d)
Q.21
A respiratory surface must be ?
0%
a) Thin
0%
b) Moist
0%
c) Wide spread
0%
d) All these.
Explanation
Answer:(d)
Q.22
Mountain sickness at high altitude is due to ... ....
0%
a) Excess CO2 in blood
0%
b) Decreased CO2 in air
0%
c) Decreased partial pressure of oxygen
0%
d) Decreased efficiency of haemoglobin
Explanation
Answer:(c)
Q.23
Which of the following shows pulmonary respiration
0%
a) Human
0%
b) Coelentrate
0%
c) Sponge
0%
d) Fishes
Explanation
Answer:(a)
Q.24
How much fraction of oxygen is transported to tissues through RBCs?
0%
a) 100%
0%
b) 97%.
0%
c) 56%
0%
d) 45%
Explanation
Answer:(b)
Q.25
The left lung is slightly smaller so as
0%
a) It is exception
0%
b) No specific reason
0%
c) Both A and B
0%
d) To accommodate heart.
Explanation
Answer:(d)
Q.26
What is role of buffer system in blood ?
0%
a) To maintain pH of blood plasma
0%
b) To maintain pH of blood
0%
c) To maintain pH of RBC
0%
d) To maintain pH of blood platelets
Explanation
Answer:(b)
Q.27
Chloride shift is required for transport of ... ...
0%
a) Nitrogen
0%
b) Oxygen
0%
c) Carbon dioxide
0%
d) Carbon dixide and oxygen
Explanation
Answer:(c)
Q.28
Carbon dioxide is transported from tissues to respiratory surface by only(C.B.S.E.1993)
0%
a) Plasma and erythrocytcs
0%
b) Plasma
0%
c) Erythrocytes
0%
d) Erythrocytes and leucocytes.
Explanation
Answer:(a)
Q.29
A lung contains many small balloon like air sacs. are called.....
0%
a) Gas spaces
0%
b) Alveoli
0%
c) Bronchi
0%
d) Bronchioles
Explanation
Answer:(b)
Q.30
Which one is not viral infection
0%
a) Emphysema.
0%
b) Bronchitis
0%
c) Vocational lung disease
0%
d) Asthma
Explanation
Answer:(c)
Q.31
The human ribs
0%
a) Are accessory respiratory organs
0%
b) Do not help in breathing
0%
c) Are main respiratory organs
0%
d) Are not respiratory organs
Explanation
Answer:(d)
Q.32
In expiration, diaphragm becomes ... ...
0%
a) Arched
0%
b) Flattened
0%
c) Straightened
0%
d) Relaxed
Explanation
Answer:(d)
Q.33
Presence of large number of alveoli around alveolar ducts opening into bronchioles in mammalian lungs is (C.B.S.E.1995)
0%
a) Inefficient system of ventilation with little of residual air
0%
b) Inefficient system of ventilation with high percentage of residual air
0%
c) An efficient system of ventilation with no residual air
0%
d) An efficient system of ventilation with little residual air.
Explanation
Answer:(d)
Q.34
Dissociation curve of O2 (which is dissociation from Hb) shifts to the rights....
0%
a) O2 concentration decrease
0%
b) CO2 concentration decreases
0%
c) CO2 concentration increase
0%
d) Chloride concentration increases
Explanation
Answer:(c)
Q.35
The centre which excites both the activities during rapid breathing is
0%
a) Ventral respiratory center
0%
b) Lateral respiratory center
0%
c) Dorsal respiratory center.
0%
d) Pneumotoxic center
Explanation
Answer:(a)
Q.36
At higher CO2 condtcentration,oxygen dissociation curve of haemoglobin will (CPMT.1990)
0%
a) Become irregular
0%
b) Move to left
0%
c) Become regular
0%
d) Move to right
Explanation
Answer:(d)
Q.37
Maximum amount 70-75% of carbon dioxide transport occurs as
0%
a) Carbaminohaemoglobin complex
0%
b) Bicarbonate
0%
c) Dissolved in plasma
0%
d) None of the above
Explanation
Answer:(b)
Q.38
Haemoglobin is (CB.S.E.1999)
0%
a) Blood carrier
0%
b) Vitamin
0%
c) Skin pigment
0%
d) Respiratoy pigment
Explanation
Answer:(d)
Q.39
CO2 reacts with water to form
0%
a) Carbonic acid
0%
b) Carbon mono oxide.
0%
c) Haemoglobinic acid
0%
d) Bicarbonate ions
Explanation
Answer:(a)
Q.40
CO2 from RBC enters blood plasma in the form of
0%
a) H2CO3
0%
b) HCO3–
0%
c) KHCO3
0%
d) NaHCO3
Explanation
Answer:(b)
Q.41
The length of human trachea is about .....
0%
a) 6 inches
0%
b) 12 cm
0%
c) 12 inches
0%
d) 18 cm
Explanation
Answer:(b)
Q.42
Blood transports oxygen in the form of
0%
a) HHbO2
0%
b) KHCO3
0%
c) KHbO2
0%
d) H2CO3
Explanation
Answer:(c)
Q.43
Volume of air remaining in lungs after: maximum respiratory effort is
0%
a) Tidal volume
0%
b) Vital capacity
0%
c) Total lung capacity
0%
d) Residual volume
Explanation
Answer:(d)
Q.44
A higher CO2 concentration of blood causes .. ...
0%
a) Slow diffusion of CO2 from blood
0%
b) Slow transport of CO2 from blood
0%
c) Slow diffusion of O2 from blood
0%
d) Both A and B
Explanation
Answer:(c)
Q.45
They respire through lungs
0%
a) Crocodiles
0%
b) Fish
0%
c) Earthworms
0%
d) Cockroaches
Explanation
Answer:(a)
Q.46
The metal ion present in haemoglobin is
0%
a) Iron
0%
b) Magnesium
0%
c) Copper
0%
d) Zinc
Explanation
Answer:(a)
Q.47
During normal breathing the ventral respiratory center
0%
a) Maintian rhythmicity of respiration
0%
b) Does not play significant role
0%
c) Excites both inhalation and exhalation
0%
d) Regulate breathing
Explanation
Answer:(b)
Q.48
Respiratory control centres are loacted in
0%
a) Ribs
0%
b) Spinal cord
0%
c) Medulla oblongata
0%
d) Lungs
Explanation
Answer:(c)
Q.49
Sound production in humans is controlled by
0%
a) Pharynx
0%
b) Larynx
0%
c) Nares
0%
d) Lungs
Explanation
Answer:(b)
Q.50
Trachea terminates in
0%
a) Nares
0%
b) Alveoli
0%
c) Bronchioles
0%
d) Bronchi
Explanation
Answer:(d)
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