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1. Blood analysis of a patient reveals an unusually high quantity of carboy haemoglobin content. Which of the following conclusions is most likely to be correct?

The patient has been inhaling polluted air containing unusually high content of carbon dioxide

The patient has been inhaling polluted air containing unusually high content of carbon monoxide

The patient has been inhaling polluted air containing unusually high content of carbon disulphide

The patient has been inhaling polluted air containing unusually high content of chloroform

Question 1 of 17

2. In alveoli of the lungs the air at the site of gas exchange is separated from the blood by?

alveolar epithelium capillary endothelium a thin layer of tunica media and tunica adventitia

alveolar epithelium and capillary endothelium

alveolar epithelium capillary endothelium and tunica adventitia

alveolar epithelium only

Question 2 of 17

3. The carbon dioxide is transported via blood to lungs as?

in the form of carbonic acid only

dissolved in blood plasma

carbamino haemoglobin and as carbonic acid

in combination with haemoglobin only

Question 3 of 17

4. The process of migration of chloride ions from plasma to RBC and of carbonate ions from RBC to plasma is?

Na pump

chloride shift

atomic shift

ionic shift

Question 4 of 17

5. Oxygen dissociation curve of haemoglobin is?

hyperbolic

sigmoid

linear

hypobolic

Question 5 of 17

6. People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 meter have around 8 million. This is because at high altitude?

people eat more nutritive food therefore more RBCs are formed

there is more UV radiation which enhances RBC production

atmospheric O 2 level is less and hence more RBCs are needed to absorb the required amount of O 2 to survive

people get pollution-free air to breathe and more oxygen is available

Question 6 of 17

7. Skin is an accessory organ of respiration in?

frog

rabbit

lizard

human

Question 7 of 17

8. The quantity 1500 mL in the respiratory volumes of a normal human adult refers to?

expiratory reserve volume

maximum air that can be breathed in and breathed out

total lung capacity

residual volume

Question 8 of 17

9. The alveolar epithelium in the lung is?

ciliated columnar

non-ciliated squamous

ciliated squamous

non-ciliated columnar

Question 9 of 17

10. When CO₂ concentration in blood increase breathing becomes?

there is no effect on breathing

faster and deeper

shallower and slow

slow and deep

Question 10 of 17

11. Air is breathed through?

nose __ mouth __ lungs

nose __ larynx __ pharynx __ bronchus __ alveoli __ bronchioles

nostrils __ pharynx __ larynx __ trachea __ bronchi __ bronchioles __ alveoli

trachea __ lungs __ larynx __ pharynx __ alveoli

Question 11 of 17

12. Carbon dioxide is transported from tissues to respiratory surface by only?

plasma and erythrocytes

plasma

erythrocytes and leucocytes

erythrocytes

Question 12 of 17

13. Although much CO₂ is carried in blood yet blood does not become acidic because?

it combines with water to form H 2 CO 3 which is neutralized by Na 2 CO 3

blood buffers play an important role in CO 2 transport

it is continuously diffused through tissues and is not allowed to accumulate

It is absorbed by the leucocytes

Question 13 of 17

14. The haemoglobin of a human foetus?

has a lower affinity for oxygen than that of the adult

its affinity for oxygen is the same as that of an adult

has only 2 protein subunits instead of 4

has a higher affinity for oxygen than that of an adult

Question 14 of 17

15. What is the vital capacity of our lungs?

Inspiratory reserve volume plus tidal volume

Total lung capacity minus expiratory reserve volume

Inspiratory reserve volume plus expiratory reserve volume

Total lung capacity minus residual volume

Question 15 of 17

16. The exchange of gases in the alveoli of the lungs takes place by?

osmosis

simple diffusion

passive transport

active transport

Question 16 of 17

17. Which one of the following organs in the human body is most affected due to shortage of oxygen?

Intestine

Skin

Brain

Kidney

Question 17 of 17

Test Name	Respiratory Gas Exchange Test
Subject	CBSE Biology
Test Type	MCQs
Total Question	17
Total Marks	34
Total Time	15 Minutes
Test Help For	CBSE Biology. CBSE Board Exams. Entrance Exams. Admissions Test. Jobs Test. General Knowledge. All Grades Exams.

Test By Subject	CBSE
Test By Topics	Respiratory Gas Exchange

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CBSE Biology Respiratory Gas Exchange Test Online

CBSE Biology Respiratory Gas Exchange Test Online

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