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Breathing And Exchange Of Gases

142 Questions Start Allen Test
All Exams Allen
Q76 Allen 2. PYQ MCQ
Which of the following statements are correct with respect to vital capacity?
(a) It includes ERV, TV and IRV (b) Total volume of air a person can inspire after a normal expiration (c) The maximum volume of air a person can breathe in after forced expiration (d) It includes ERV, RV and IRV. (e) The maximum volume of air a person can breath out after a forced inspiration.
Choose the most appropriate answer from the options given below:
A.
(b), (d) and (e)
B.
(a), (c) and (d)
C.
(a), (c) and (e)
D.
(a) and (e)
Q77 Allen 2. PYQ MCQ
Vital capacity of lung is
A.
IRV + ERV + TV + RV
B.
IRV + ERV + TV - RV
C.
IRV + ERV + TV
D.
IRV + ERV
Q78 Allen 2. PYQ MCQ
Select the sequence of steps in Respiration.
(A) Diffusion of gases $( { \mathsf { O } } _ { 2 }$ and $C 0 _ { 2 } )$ across alveolar membrane. (B) Diffusion of $\mathsf { O } _ { 2 }$ and $\mathsf { C O } _ { 2 }$ between blood and tissues. (C) Transport of gases by the blood. (D) Pulmonary ventilation by which atmospheric air is drawn in and $\mathsf { C O } _ { 2 }$ rich alveolar air is released out.
(E) Utilisation of $\mathsf { O } _ { 2 }$ by the cells for catabolic reactions are resultant release of $CO_2$
Choose the correct answer from the
options given below :-
A.
(D), (A), (C), (B), (E)
B.
(C), (B), (A), (E), (D)
C.
(B), (C), (E), (D), (A)
D.
(A), (C), (B), (E), (D)
Q79 Allen 2. PYQ MCQ
Assertion (A) : A person goes to high altitude and experiences ‘Altitude Sickness’ with symptoms like breathing difficulty and heart palpitations. Reason (R) : Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen. In the light of the above statements, choose the correct answer from the options given below :-
A.
(A) is true but (R) is false.
B.
(A) is false but (R) is true.
C.
Both (A) and (R) are true and (R) is the correct explanation of (A).
D.
Both (A) and (R) are true but (R) is not the correct explanation of (A).
Q80 Allen 2. PYQ MCQ
Which of the following factors are favourable for the formation of oxyhaemoglobin in alveoli?
A.
High ${ \mathsf { p O } } _ { 2 }$ and High ${ \mathsf { p C O } } _ { 2 }$
B.
High ${ \mathsf { p } } { \mathsf { O } } _ { 2 }$ and Lesser $\mathsf { H } ^ { + }$ concentration
C.
Low ${ \mathsf { p C O } } _ { 2 }$ and High $\mathsf { H } ^ { + }$ concentration
D.
Low ${ \mathsf { p C O } } _ { 2 }$ and High temperature
Q81 Allen 2. PYQ Match the Columns
Match Column-I with Column-II Choose the correct answer from the options given below :- Match Column-I with Column-II
Column-IColumn-II
(A)Expiratory capacity
(B)Functional residual capacity
(C)Vital capacity
(D)Inspiratory capacity
(I)Expiratory reserve volume + Tidal volume + Inspiratory reserve volume
(II)Tidal volume + Expiratory reserve volume
(III)Tidal volume + Inspiratory reserve volume
(IV)Expiratory reserve volume + Residual volume
A.
A-II, B-IV, C-I, D-III
B.
A-III, B-II, C-IV, D-I
C.
A-II, B-I, C-IV, D-II
D.
A-I, B-III, C-II, D-IV
Q82 Allen 2. PYQ Match the Columns
Match Column-I Column-II Choose the correct answer from the options given below :-
Column-IColumn-II
(A)Residual Volume
(B)Vital Capacity
(C)Expiratory Capacity
(D)Tidal Volume
(I)Maximum volume of air that can be breathed in after forced expiration.
(II)Volume of air inspired or expired during normal respiration.
(III)Volume of air remaining in lungs after forcible expiration.
(IV)Total volume of air expired after normal inspiration.
A.
A-IV, B-III, C-II, D-I
B.
A-II, B-IV, C-I, D-III
C.
A-III, B-I, C-IV, D-II
D.
A-I, B-II, C-III, D-IV
Q83 Allen 2. PYQ MCQ
Assertion A : During the transportation of gases about 20-25 percent of $\complement 0 _ { 2 }$ is carried by Haemoglobin as carbamino-haemoglobin. Reason R : This binding is related to high ${ \mathsf { p C O } } _ { 2 }$ and low ${ \mathsf { p O } } _ { 2 }$ in tissues. In the light of the above statements, choose the correct answer from the options given below :
A.
A is true but R is false
B.
A is false but R is true
C.
Both A and R are true and R is the correct explanation of A.
D.
Both A and R are true but R is NOT the correct explanation of A.
Q84 Allen 3. NCERT BASED QUESTIONS MCQ
Which is a common passage for food and air?
A.
Trachea
B.
Oesophagus
C.
Pharynx
D.
Glottis
Q85 Allen 3. NCERT BASED QUESTIONS MCQ
The function of conducting part in respiratory system of human is :-
A.
Clears foreign particles.
B.
Humidifies atmospheric air
C.
Brings the air to body temperature
D.
All of the above
Q86 Allen 3. NCERT BASED QUESTIONS MCQ
When there is no air in initial bronchioles, they does not collapse. It is due to :-
A.
Presence of Lecithin
B.
Presence of incomplete cartilaginous rings
C.
Presence of complete cartilaginous rings
D.
Presence of mucous
Q87 Allen 3. NCERT BASED QUESTIONS MCQ
Which of the following steps not involved in respiration?
A.
Diffusion of gases across alveolar membrane
B.
Transport of gases by the blood
C.
Provide nutrients to all the living cells of body
D.
Utilisation of $O_2$
by the cells for catabolic reactions and resultant release of $CO_2$.
Q88 Allen 3. NCERT BASED QUESTIONS MCQ
Inspiration can occur, when –
A.
Pressure within the lungs is less than the atmospheric pressure.
B.
Pressure within the lungs is more than the atmospheric pressure.
C.
Pressure within the lungs and atmospheric air is same.
D.
No effect of pressure on inspiration.
Q89 Allen 3. NCERT BASED QUESTIONS MCQ
By the contraction in diaphragm volume of thoracic chamber increases in the :-
A.
Dorso-ventral axis
B.
Antero-posterior axis
C.
Dorso-posterior axis
D.
Antero-ventral axis
Q90 Allen 3. NCERT BASED QUESTIONS MCQ
The primary muscle of inspiration is :-
A.
Diaphragm
B.
Intercostal muscle
C.
Abdominal muscle
D.
Oblique muscle
Q91 Allen 3. NCERT BASED QUESTIONS MCQ
Total volume of air a person can expire after normal inspiration is :-
A.
Vital capacity
B.
Functional residual capacity
C.
Inspiratory capacity
D.
Expiratory capacity
Q92 Allen 3. NCERT BASED QUESTIONS MCQ
Which of the following factor can affect the rate of diffusion of gases?
A.
Thickness of the membranes involved in diffusion
B.
Solubility of the gases
C.
Pressure of the gases
D.
All of these
Q93 Allen 3. NCERT BASED QUESTIONS MCQ
Which of the following is correct?
A.
Alveoli-pO₂=159 mmHg, Deoxygenated blood-pCO₂=40 mmHg, Tissue-pCO₂=20 mmHg
B.
Alveoli-pCO₂=40 mmHg, Deoxygenated blood-pO₂=95 mmHg, Tissue-pO₂=40 mmHg
C.
Alveoli-pO₂=104 mmHg, Deoxygenated blood-pCO₂=45 mmHg, Tissue-pCO₂=45 mmHg
D.
Alveoli-pO₂=40 mmHg, Deoxygenated blood-pO₂=40 mmHg, Tissue-pCO₂=45 mmHg
Q94 Allen 3. NCERT BASED QUESTIONS MCQ
What is true about diffusion capacity?
A.
Diffusion capacity of $\mathsf { C O } _ { 2 }$ is much higher than ${ { 0 } _ { 2 } }$
B.
Diffusion capacity of $\mathsf { O } _ { 2 }$ is much higher than $\mathsf { C O } _ { 2 }$
C.
Diffusion capacity of $\mathsf { O } _ { 2 }$ and $\mathsf { C O } _ { 2 }$ is same
D.
None of the above
Q95 Allen 3. NCERT BASED QUESTIONS MCQ
Which of the following statement is true?
A.
20-25 percent $\complement \mathsf { O } _ { 2 }$ is transported by RBCs.
B.
97 percent $\mathsf { O } _ { 2 }$ is transported by RBCs.
C.
70 percent $\mathsf { C O } _ { 2 }$ is carried as bicarbonate.
D.
All of these are true.
Q96 Allen 3. NCERT BASED QUESTIONS MCQ
Binding of oxygen with haemoglobin is primarily related to :-
A.
Partial pressure of $\mathsf { O } _ { 2 }$
B.
Partial pressure of $\complement \mathsf { O } _ { 2 }$
C.
$H^+$ ion concentration
D.
Temperature
Q97 Allen 3. NCERT BASED QUESTIONS MCQ
In which the following factors can interfere in binding of $\mathsf { O } _ { 2 }$ with haemoglobin. A → $pCO_2$, B → $H^+$ ion concentration C → Temperature
A.
Only A
B.
B, C
C.
A and C
D.
A, B, C
Q98 Allen 3. NCERT BASED QUESTIONS MCQ
The conditions which are favourable for the formation of oxyhaemoglobin :-
A.
pO₂↑, pCO₂↑, H⁺ concentration↓, Temperature↓
B.
pO₂↓, pCO₂↓, H⁺ conc.↑, Temperature↑
C.
pO₂↑, pCO₂↓, H⁺ conc.↓, Temperature↓
D.
pO₂↑, pCO₂↑, H⁺ conc.↓, Temperature↑
Q99 Allen 3. NCERT BASED QUESTIONS MCQ
Which of the following statement/s is/are correct?
(A) High concentration of carbonic anhydrase is present in RBCs. (B) Minute quantities of carbonic anhydrase is present in plasma. (C) Every 100 ml blood delivers approximately 4 ml of $\mathsf { C O } _ { 2 }$ to the alveoli. (D) 20-25% $\complement 0 _ { 2 }$ is carried by haemoglobin as carbaminohaemoglobin.
A.
A, C and D
B.
A and D
C.
A, B, C and D
D.
Only A
Q100 Allen 3. NCERT BASED QUESTIONS MCQ
Which of the following statement is incorrect?
A.
Among vertebrates, fishes use gills whereas amphibians, reptiles, birds and mammals respire through lungs.
B.
Mechanisms of breathing vary among different groups of animals depending mainly on their habitats and levels of organisation.
C.
Lower invertebrates like sponges, coelenterates, flatworms, etc., exchange $\mathsf { O } _ { 2 }$ with $\mathsf { C O } _ { 2 }$ by osmosis over their entire body surface.
D.
Earthworms use their moist cuticle and insects have a network of tubes (tracheal tubes) to transport atmospheric air within the body