NCERT Breathing Exchange Gases sample,model,mock test,mcqs NEET

Breathing and Exchange of Gases Mock Test-5

Question No:1

The mode of respiration in rabbit is

[A] cutaneous
[B] mucosal
[C] tracheal
[D] pulmonary



Question No:2

Respiratory diffusion membrane is majorly made of ____ layers

[A] 2
[B] 3
[C] 4
[D] 5



Question No:3

The solubility of CO2 is _____ times higher than that of O2

[A] 10-15
[B] 20-25
[C] 30-35 times
[D] 210 times



Question No:4

What is the value of [PO2 (in deoxygenated blood) minus PCO2 (in deoxygenated blood)]?

[A] 5
[B] -5
[C] 45
[D] 40



Question No:5

Select the incorrect statement from the following:

[A] Diffusion of O2 occurs from alveoli to tissue
[B] Diffusion of CO2 occurs from tissue to alveoli
[C] Amount of CO2 diffuse through membrane is higher than that of O2
[D] Partial pressure of O2 is higher in pulmonary artery than that of pulmonary vein.



Question No:6

Total thickness of respiratory diffusion membrane is

[A] less than fm
[B] less than micro meter,
[C] much less than mm
[D] less than nm.



Question No:7

Diffusion membrane is made up of

[A] thin squamous epithelium of alveoli
[B] endothelium of alveolar capillaries
[C] basement membrane between the two layers
[D] all



Question No:8

Partial pressures (in mmHg) of O2 in atmospheric air, alveoli, deoxygenated blood, oxygenated blood and tissues are

[A] 159,104,40,95,40
[B] 104,40,40,95,159
[C] 0.3,40,45,40,45
[D] 159,104,45,95,40



Question No:9

Partial pressure (in mmHg) of CO2 in atmospheric air, alveoli, deoxygenated blood, oxygenated blood and tissues are

[A] 159,104,40,95,40
[B] 104,40,40,95,159
[C] 0.3,40,45,40,45
[D] 159,104,45,95,40



Question No:10

Total percentage of O2 transported by hemoglobin or RBC is

[A] 3%
[B] 97%
[C] 70%
[D] 7%



Question No:11

Besides RBC blood plasma also carries O2 in dissolved state. The percentage is

[A] 3%
[B] 97%
[C] 70%
[D] 7%



Question No:12

CO2 is transported

[A] by RBC
[B] as bicarbonates
[C] in dissolved state through plasma
[D] all



Question No:13

Blood entering the lung is rich in

[A] Oxygen
[B] Carbon dioxide
[C] Urea
[D] More RBCs



Question No:14

The majority of CO2 is transported as

[A] carbonates
[B] bicarbonates
[C] carbaminohaemoglobin
[D] dissolved state in blood



Question No:15

Oxygen is transported in blood mainly by

[A] Blood plasma
[B] Leucocytes
[C] Thrombocytes
[D] Erythrocytes