CBSE

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

Na pump

atomic shift

chloride shift

ionic shift

Question 1 of 17

2. 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?

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

people eat more nutritive food therefore more RBCs are formed

Question 2 of 17

3. The alveolar epithelium in the lung is?

ciliated squamous

non-ciliated squamous

ciliated columnar

non-ciliated columnar

Question 3 of 17

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

erythrocytes

erythrocytes and leucocytes

plasma and erythrocytes

plasma

Question 4 of 17

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

expiratory reserve volume

residual volume

maximum air that can be breathed in and breathed out

total lung capacity

Question 5 of 17

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

dissolved in blood plasma

carbamino haemoglobin and as carbonic acid

in the form of carbonic acid only

in combination with haemoglobin only

Question 6 of 17

7. 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 only

alveolar epithelium and capillary endothelium

alveolar epithelium capillary endothelium and tunica adventitia

Question 7 of 17

8. Skin is an accessory organ of respiration in?

rabbit

frog

lizard

human

Question 8 of 17

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

passive transport

simple diffusion

active transport

osmosis

Question 9 of 17

10. What is the vital capacity of our lungs?

Total lung capacity minus residual volume

Total lung capacity minus expiratory reserve volume

Inspiratory reserve volume plus expiratory reserve volume

Inspiratory reserve volume plus tidal volume

Question 10 of 17

11. When CO₂ concentration in blood increase breathing becomes?

there is no effect on breathing

slow and deep

shallower and slow

faster and deeper

Question 11 of 17

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

It is absorbed by the leucocytes

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

Question 12 of 17

13. 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 13 of 17

14. Oxygen dissociation curve of haemoglobin is?

linear

hyperbolic

hypobolic

sigmoid

Question 14 of 17

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

Kidney

Skin

Intestine

Brain

Question 15 of 17

16. 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 disulphide

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 chloroform

Question 16 of 17

17. 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 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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