Q26
Allen
1. (Conceptual Quetions)
MCQ
Partial pressure of $\mathsf { C O } _ { 2 }$ is higher :-
A.
At alveolar level
B.
At tissue level
C.
In atmosphere
D.
In oxygenated blood
Q27
Allen
1. (Conceptual Quetions)
MCQ
In the given diagram, identify what is depicted by A, B and C. Choose the correct option.
A.
A-Air going out from lungs, B-Ribs and sternum relaxed, C-volume of thorax increased
B.
A-Air entering lungs, B-Ribs and sternum relaxed, C-volume of thorax increased
C.
A-Air entering lungs, B-Ribs and sternum raised, C-volume of thorax increased
D.
A -Air going out from lungs, B-Ribs and sternum relaxed, C-volume of thorax decreased
Q28
Allen
1. (Conceptual Quetions)
MCQ
Almost same ${ \mathsf { p O } } _ { 2 }$ in humans is found in
A.
alveoli and tissues
B.
oxygenated blood and deoxygenated blood
C.
alveoli and oxygenated blood
D.
alveoli and deoxygenated blood
Q29
Allen
1. (Conceptual Quetions)
MCQ
Arrange the following in the order if increasing volume
(i) Tidal volume
(ii) Residual volume
(iii) Expiratory reserve volume
(iv) Vital capacity
(i) Tidal volume
(ii) Residual volume
(iii) Expiratory reserve volume
(iv) Vital capacity
A.
(i) < (ii) < (iii) < (iv)
B.
(i) < (iii) < (ii) < (iv)
C.
(i) < (iv) < (iii) < (ii)
D.
(i) < (iv) < (ii) < (iii)
Q30
Allen
1. (Conceptual Quetions)
MCQ
Under normal condition 100 ml blood deliver ________ to tissue.
A.
4 ml $\mathsf { O } _ { 2 }$
B.
10 ml $\mathsf { O } _ { 2 }$
C.
5 ml $\mathsf { O } _ { 2 }$
D.
25 ml $\mathsf { O } _ { 2 }$
Q31
Allen
1. (Conceptual Quetions)
MCQ
Effect of $\complement 0 _ { 2 }$ concentration on dissociation of oxyhaemoglobin is called:
A.
Bohr's effect
B.
Haldane effect
C.
Hamburger effect
D.
Root effect
Q32
Allen
1. (Conceptual Quetions)
MCQ
Chloride shift occurs for the transport of:
A.
${ { 0 } _ { 2 } }$
B.
$\mathsf { C O } _ { 2 }$
C.
CO
D.
${ { 0 } _ { 3 } }$
Q33
Allen
1. (Conceptual Quetions)
MCQ
Exchange of bicarbonates and chloride ions between RBC and plasma is called:-
A.
Chloride shift.
B.
Bohr's effect.
C.
Haldane's effect.
D.
Intra cellular respiration.
Q34
Allen
1. (Conceptual Quetions)
MCQ
Determination of oxygen carried by haemoglobin is done by
A.
pH
B.
Partial pressure of oxygen
C.
Partial pressure of carbon dioxide
D.
All the above
Q35
Allen
1. (Conceptual Quetions)
MCQ
For proper transport of $\mathsf { O } _ { 2 }$ and ${ \mathsf { C O } } _ { 2 } ,$ , blood should be
A.
Slightly acidic
B.
Strongly acidic
C.
Strongly alkaline
D.
Slightly alkaline
Q36
Allen
1. (Conceptual Quetions)
MCQ
What would happen when blood is acidic?
A.
Binding of oxygen with haemoglobin increases
B.
Red blood corpuscles are formed in higher number
C.
Binding of oxygen with haemoglobin decreases
D.
There is no change in oxygen binding nor number of RBC
Q37
Allen
1. (Conceptual Quetions)
MCQ
The chloride shift is movement of $Cl^ā$
A.
From plasma to RBC
B.
From WBC to plasma
C.
From RBC to plasma
D.
From plasma to WBC
Q38
Allen
1. (Conceptual Quetions)
MCQ
Chloride shift occurs in respond to :
A.
$\mathsf { H } ^ { + }$
B.
$\mathsf { K } ^ { + }$
C.
${ \mathsf { H C O } } _ { 3 } ^ { - }$
D.
${ \mathsf { N } } { \mathsf { a } } ^ { + }$
Q39
Allen
1. (Conceptual Quetions)
MCQ
What happen to the $\mathsf { O } _ { 2 }$ dissociation curve of Hb if pH is decreased ?
A.
shift to left
B.
shift to right
C.
remain unchanged
D.
will oscillate erratically
Q40
Allen
1. (Conceptual Quetions)
MCQ
Dissociation curve shifts to the right when:-
A.
$\mathsf { C O } _ { 2 }$ concentration decreases
B.
$\mathsf { C O } _ { 2 }$ concentration increases
C.
$\mathsf { O } _ { 2 }$ concentration increases
D.
$\mathsf { H } ^ { + }$ concentration decreases
Q41
Allen
1. (Conceptual Quetions)
MCQ
Oxyhaemoglobin acts as
A.
Alkali
B.
Acid
C.
Neutral
D.
Buffer
Q42
Allen
1. (Conceptual Quetions)
MCQ
The oxygen dissociation curve will show a right shift in case of :-
A.
Less $H^+$ concentration
B.
High partial pressure of $\mathsf { O } _ { 2 }$
C.
Low partial pressure of $\complement 0 _ { 2 }$
D.
High temperature.
Q43
Allen
1. (Conceptual Quetions)
MCQ
Which of the following conditions are found in the alveoli of lungs :
I. High ${ \mathsf { p O } } _ { 2 }$ II. Low ${ \mathsf { p C O } } _ { 2 }$ III. High ${ \mathsf { p C O } } _ { 2 }$ IV. Low ${ \mathsf { p O } } _ { 2 }$ V. Low $\mathsf { H } ^ { + }$ VI. High $\mathsf { H } ^ { + }$
Choose the correct option.
A.
I, III and V
B.
III, IV and VI
C.
I, IV and VI
D.
I, II and V
Q44
Allen
1. (Conceptual Quetions)
MCQ
Binding of $\mathsf { C O } _ { 2 }$ to oxyhaemoglobin occurs when :
A.
${ \mathsf { p C O } } _ { 2 }$ is high and ${ \mathsf { p O } } _ { 2 }$ is less in tissue
B.
${ \mathsf { p C O } } _ { 2 }$ is low and ${ \mathsf { p O } } _ { 2 }$ is high in tissue
C.
${ \mathsf { p C O } } _ { 2 }$ is low and ${ \mathsf { p } } { \mathsf { O } } _ { 2 }$ is low in tissue
D.
${ \mathsf { p C O } } _ { 2 }$ is high and ${ \mathsf { p } } { \mathsf { O } } _ { 2 }$ is high in tissue
Q45
Allen
1. (Conceptual Quetions)
MCQ
In Bohr's effect, curve shift to right when :-
A.
${ \mathsf { p C O } } _ { 2 }$ decreases and $\mathsf { p } 5 0 0 _ { 2 }$ increases
B.
${ \mathsf { p C O } } _ { 2 }$ increases and $\mathsf { p } 5 0 0 _ { 2 }$ decreases
C.
${ \mathsf { p C O } } _ { 2 }$ increases and $\mathsf { p } 5 0 0 _ { 2 }$ increases
D.
${ \mathsf { p C O } } _ { 2 }$ increases and p50 $\mathsf { O } _ { 2 }$ decreases and pH increases
Q46
Allen
1. (Conceptual Quetions)
MCQ
In which three forms $\mathsf { C O } _ { 2 }$ is transported by blood?
A.
As a solution, Carbamino compounds, bicarbonates
B.
As a solution, Carbamino proteins, ${ \sf K H C O 3 }$
C.
As a solution, Carbamino haemoglobin, NaH $\mathsf { I C O } _ { 3 }$
D.
As a solution, Carbamino compound, ${ \sf H } _ { 2 } { \sf C } { \sf O } _ { 3 }$
Q47
Allen
1. (Conceptual Quetions)
MCQ
H. Hb is :-
A.
$H_2$ b
B.
Heavy hydrogen bond
C.
Reduced bromide
D.
Haemoglobin acid
Q48
Allen
1. (Conceptual Quetions)
MCQ
During transport of $\mathsf { C O } _ { 2 } ,$ blood does not become acidic due to :
A.
Neutralisation of ${ \sf H } _ { 2 } { \sf C } { \sf O } _ { 3 }$ by ${ \sf N a } _ { 2 } { \sf C O } _ { 3 }$
B.
Absorption by leucocytes
C.
Blood buffers
D.
Non-accumulation
Q49
Allen
1. (Conceptual Quetions)
MCQ
Rate of respiration is directly affected by
A.
$\mathsf { C O } _ { 2 }$ concentration
B.
${ { 0 } _ { 2 } }$ in trachea
C.
Concentration of $\mathsf { O } _ { 2 }$
D.
Diaphragm expansion
Q50
Allen
1. (Conceptual Quetions)
MCQ
CO is more toxic than $\mathsf { C O } _ { 2 }$ because it :
A.
Damages lungs
B.
It destroys haemoglobin
C.
Affects the nervous system
D.
Reduces the oxygen carrying capacity of haemoglobin